10 Shark Tank Ideas That Have Not Been Used

While Shark Tank is a legendary springboard for entrepreneurs, many wildly viral internet products never actually appeared on the show, despite popular urban legends. Viral phenomena like Liquid I.V., Flex Tape, and Kodiak Cakes either rejected the show, never applied, or walked away from deals.

The biggest viral products that frequently get confused as Shark Tank inventions, along with the real inventions that were actually rejected but found massive success, clarify exactly what happened behind the scenes. Often, products are mistaken as Shark Tank failures because they turned down massive offers or the Sharks severely underestimated them on air.

If you are looking for products that actually went viral after being backed on the show, several brands achieved explosive growth. This curated list features cutting-edge consumer products that are currently thriving online but are entirely absent from traditional pitch shows like Shark Tank. Valuations and gross margins reflect careful estimates of manufacturing, overhead, and online direct-to-consumer (DTC) pricing dynamics.

10 Shark Tank Ideas That Have Not Been Used

Eco-friendly Baby Diapers

Eco-friendly diaper brands that have appeared on Shark Tank include Kudos (USA). These brands prioritize plant-based, biodegradable materials and 100% cotton inner layers to prevent diaper rash while minimizing environmental impact. Founded by Amrita Saigal, Kudos offers the only disposable diaper with a 100% breathable, natural cotton inner layer.In Season 14, Saigal secured a $250,000 deal from guest shark Gwyneth Paltrow and Mark Cuban.They use patent-pending DoubleDry technology that utilizes two absorption layers instead of traditional plastic. They are completely chlorine-free and doctor-recommended for eczema-prone skin.

Portable Solar Chargers 

Portable solar chargers have made several appearances on Shark Tank over the years. The most notable devices designed for everyday consumer use include Grouphug Solar and LuminAID. Grouphug Solar is a decorative, stained-glass-style solar panel designed specifically to suction cups to apartment windows. It comes with a hidden USB port to charge phones, tablets, and smartwatches indoors using sunlight.Founder Krystal Persaud appeared in Season 11 and secured a $150,000 deal with Mark Cuban.

LuminAID was originally designed as an inflatable, waterproof solar lantern for disaster relief and camping, the company expanded its line to include the PackLite series. These packable solar devices function as both a lantern and a portable battery charger for small electronics.Founders Anna Stork and Andrea Sreshta appeared in Season 6 and accepted an offer from Kevin O’Leary. They returned for a successful update in later seasons, and their products have been widely used in global humanitarian relief.

Smart Pet Feeder 

The only smart pet feeder to be featured on Shark Tank is iCPooch, which appeared in Season 6 (2015). Pitched by 14-year-old Brooke Martin, the device allowed owners to dispense treats and video-chat with their pets remotely. While the company saw commercial success, iCPooch eventually shut down operations.While there aren’t any currently active smart pet feeder companies from Shark Tank, the pet technology market has exploded.

Reusable Food Wraps

The most notable reusable food wraps featured on the Shark Tank franchise are The Swag which secured a $150,000 deal on Shark Tank Australia and BeeBAGZ a beeswax wrap storage bag. Founder of, The Swag Peita Pini, appeared on Season 4 of Shark Tank Australia seeking an investment to expand her 100% natural, unbleached cotton fridge bags, which are designed to keep produce fresh for up to two weeks.She secured a $150,000 investment from Shark Steve Baxter. BeeBAGZ company manufactures all-natural beeswax storage bags and wraps infused with beeswax, jojoba oil, and tree resin. They are a reusable, plastic-free alternative to traditional sandwich bags.

Smart Water Bottle

The smart water bottle featured on Shark Tank is LARQ, a self-cleaning bottle that uses UV-C LED light to neutralize bacteria and purify water. During its Season 12 appearance, founder Justin Wang secured a deal with Sharks Kevin O’Leary and Lori Greiner for $1 million for a 4% stake. Automatically activates every two hours to zap away up to 99.9999% of odor-causing bacteria and viruses using non-toxic UV-C light.Models like the PureVis 2 feature advanced nano-zero filters that remove chlorine, heavy metals, and PFAs.The bottle connects via Bluetooth to an app (e.g., Apple Health) to track hydration, set daily goals, and provide purification status updates. Charges via USB-C and lasts up to a month on a single charge.

Virtual Personal Assistant

Virtual personal assistant companies and AI assistant technologies have been prominent fixtures across multiple versions of Shark Tank, most notably on Shark Tank the original US series. These pitches range from human-backed concierge services to advanced AI agents built to automate tasks and attend meetings. Beulr pitched by Peter Solimine on the US series. Beulr was designed as an app that automatically attends and records virtual meetings (like Zoom) so users wouldn’t have to.The founder highlighted the viral growth of the app, though the Sharks were cautious about the long-term viability and privacy implications of having an AI bot “fake attend” professional meetings.

Electric Fireplace

Electric fireplaces are highly efficient, eco-friendly heating solutions that eliminate direct combustion emissions. Designed to provide zone heating and realistic ambiance without the need for venting, modern models often feature smart home connectivity, smartphone controls, and LED or holographic flame technology.While dedicated electric fireplace brands have historically been absent from Shark Tank, several closely related hearth and safety concepts have appeared such as Peter Thorp’s FireAvert, which prevents stove fires, and Radiate portable campfires.

The broader market features well-established players like Modern Flames, MagikFlame, and Napoleon that cater heavily to eco-conscious consumers and high-end interior designs.The numbers behind premium electric fireplaces align with the durable, R&D-heavy nature of the appliances: Retail Price: Premium smart electric fireplaces retail in the $450 to $3,500 range depending on size and technology (e.g., holographic projections vs. traditional LED).

Manufacturing Cost: Costs to produce typically scale between $120 and $500 per unit, influenced by the casing, heating elements, and flame visual mechanics. Gross Margins: Gross profit margins remain exceptionally high, resting comfortably around 70% to 75%.These heavy margins reflect the durable engineering, longevity, and intensive upfront investments required for manufacturing. They remain highly sought-after for modern housing renovations and media wall integrations. 

Smart Sports Equipment

Smart sports equipment features heavily across the global Shark Tank franchise, spanning AI-powered home gyms, resistance machines, and tracking sensors. These pitches generally highlight how digital connectivity and data analytics are transforming athletic training and personal fitness.One of the most notable smart fitness devices to appear on the show, MAXPRO is a portable, Bluetooth-connected cable machine.

Weighing just 10 pounds, it provides up to 300 lbs of adjustable resistance and connects to an app that tracks workout analytics and reps. Founder Nezar Akeel secured a deal with Mark Cuban. Metric mate tech company created a sensor-driven device that attaches to strength-training equipment (both free weights and selectorized machines). The sensor tracks sets, reps, and weight, sending the data to an app so athletes and trainers can closely analyze performance and progress.

Electric Scooter Rental Service

Electric scooter rental and subscription services are a highly validated, multi-billion dollar micro-mobility market, contrary to the misconception that they have not been pitched or utilized. Companies like Bird and Lime have grown into massive global entities.Global operators like Bird, Lime, and regional players like Zypp Electric dominate the shared micro-mobility and delivery space, proving the high consumer demand for eco-friendly urban commuting.

While shared dockless scooters have been around for years, e-scooter subscription services (similar to your proposed model) have actively been pitched on international versions of the show, such as on Shark Tank India. Startups offering direct-to-consumer rentals, like Unagi Scooters, have also appeared on the U.S. version of Shark Tank.The rental model relies heavily on a high volume of short trips and active daily users to offset operational expenses. Companies operating in this space rely on Unagi Scooter Subscriptions and similar localized subscription models.

Electric Bike Conversion Kit

Prominent electric bike conversion kits have been featured on the Shark Tank franchise: GeoOrbital (Shark Tank US. Both transform standard bicycles into electric vehicles by replacing or attaching to existing bike wheels or drivetrain systems.Featured on Shark Tank US, GeoOrbital replaces a standard bicycle’s front wheel with their all-in-one electric wheel.Installs in under 60 seconds without tools by replacing the standard front wheel.Accelerates to 20 mph (approx. 32 km/h) and has a range of up to 20 miles per charge.Originally priced around $950.

Conclusion

Innovative products with strong internet appeal and distinct features are highly attractive to investors. However, translating online popularity into sustainable business valuations on shows like Shark Tank requires rigorous financial validation. Innovative products with strong internet appeal and distinct features are highly attractive to investors. However, translating online popularity into sustainable business valuations on shows like Shark Tank requires rigorous financial validation.

Sharks and real-world investors calculate implied valuation by dividing the investment by the equity offered, but they justify it using industry-standard multiples (such as P/E or Revenue Multiples) based on trailing and projected sales.Profit margins, customer acquisition costs, and production expenses must be clearly proven during due diligence. Without verified data from leading manufacturers, initial financial figures remain highly speculative.Even when products lack television exposure, the internet’s role in establishing early demand is undeniable. It de-risks the market for investors and proves product-market fit.