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Shark Tank has hosted many entrepreneurial hits—and misses. Here are 30 of the smartest, weirdest and most mind-blowing inventions to get into the tank.

Shaun Harrison
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1 of 30 ABC/Sony Pictures Television

Breathometer (Season 5, Episode 2)

This FDA-certified, easy-to-use smartphone breathalyzer not only analyzes BAC but also suggests how long it will take to get to zero, giving users no excuse to drive when they shouldn't.

Breathometer's tech was impressive enough to lure all five Sharks into a deal -- a Shark Tank rarity.

2 of 30 ABC/Sony Pictures Television

Squatty Potty (Season 6, Episode 9)

Meant to improve the way we go to the bathroom, the Squatty Potty stool allows consumers to do just what its title suggests. This invention has made shark Lori Greiner -- and its inventors -- a fortune.

3 of 30 Beth Dubber, ABC/Sony Pictures Television

xCraft (Season 5, Episode 13)

This company set off a feeding frenzy in the tank over its hybrid Phone Drone concept, which turns ordinary smartphones into full-featured aerial drones.

Rather than compete against each other, all five Sharks joined in to make an investment in the company.

4 of 30 ABC/Sony Pictures Television

Chord Buddy (Season 3, Episode 3)

The simple contraption aids beginner guitar players, kind of like a Guitar Hero that actually teaches you to play. Robert Herjavec made a deal with inventor Travis Perry to keep the product's manufacturing in the United States.

5 of 30 ABC/Sony Pictures Television

180 Cup (Season 5, Episode 7)

The ultimate college party cup, 180 Cup looks like an everyday red Solo cup but is actually a two-in-one beer cup and shot glass.

Daymond John invested in the company, but struggled to work effectively with the product's inventor. John's unsuccessful attempt to seal an endorsement deal with Lil Jon for the product was the topic of a recent episode of Beyond The Tank.

6 of 30 ABC/Sony Pictures Television

CitiKitty (Season 2, Episode 8)

After watching Meet the Parents, didn't you wish your cat could use the toilet to do its business, too? With CitiKitty, your cat can be just like Mr. Jinx.

Former Shark Kevin Harrington was able to best Barbara Corcoran and beat her at a deal with the company.

7 of 30 ABC/Sony Pictures Television

Phone Soap (Season 6, Episode 16)

Not to alarm you, but your smartphone is crawling with bacteria and other microbes -- especially if you use it while on the toilet. (It's OK, we do it too.) This innovative gadget solves that problem, using UV light to sanitize your tech.

Lori Greiner bought in to the company and quickly turned Phone Soap into a QVC success.

8 of 30 ABC/Sony Pictures Television

DropStop (Season 4, Episode 20)

Solving the pesky problem of fries and phones falling into car seat gaps, Drop Stop plugs the gaps as a sturdy yet flexible filler.

Lori Greiner invested in the company and brought the product to QVC.

9 of 30 ABC/Sony Pictures Television

GrooveBook (Season 5, Episode 13)

Bringing the photobook to the 21st century, GrooveBook offers a Netflix-like subscription to create physical, keepsake photobooks of their smart phone pictures. Because our phones are filled with so...many...photos.

Shortly after making a clever deal on Shark Tank, GrooveBook was acquired by Shutterfly.

10 of 30 ABC/Sony Pictures Television

Scrub Daddy sponge (Season 4, Episode 7)

A smiling sponge may not seem like much until you realize the eyes act as finger holders to get hard-to-reach spaces, and the smile effortlessly scrubs spoons and other utensils clean. Scrub Daddy holds a spot as one of Shark Tank's -- and investor Lori Greiner's -- greatest successes.

11 of 30 ABC/Sony Pictures Television

ReadeREST (Season 3, Episode 6)

This tiny piece of metal with magnets doesn't look like much, but the eyewear holder is a simple solution to a simple problem that has resulted in simply millions of dollars.

12 of 30 ABC/Sony Pictures Television

The Paint Brush Cover (Season 5, Episode 22)

One of those inventions that you think should have been invented already, The Paint Brush Cover seals wet paint brushes, preventing them from hardening.

13 of 30 Nubrella

Nubrella (Season 1, Episode 14)

A hands-free umbrella may look like it came straight out of a sci-fi movie, but the idea of not fumbling with a smartphone while holding an umbrella does seem enticing.

14 of 30 Cycloramic

Cycloramic (Season 5, Episode 16)

Cycloramic converts your run-of-the-mill iPhone into a hands-free panoramic video and photo machine. You have to see the iPhone spinning on its own to believe it.

15 of 30 HoodiePillow

HoodiePillow (Season 4, Episode 15)

When wearing a hoodie and laying on a pillow becomes just too complicated HoodiePillow offers the best of both worlds. It comes in a travel pillow version, too!

16 of 30 Squeeky Knees

Squeeky Knees (Season 7, Episode 5)

This noisy infant clothing features squeaky kneepads, so grownups always hear where a crawling baby may roam. Better than a leash with a bell, right?

17 of 30 CordaRoy’s

CordaRoy’s (Season 4, Episode 19)

It's a beanbag! It's a bed! It's a foam beanbag chair thing that converts into a bed.

18 of 30 Ride On, Carry On

Ride On, Carry On (Season 2, Episode 4)

Part carry-on luggage, part stroller, this travel hybrid contraption ensures antsy little ones stay put and stay safe while traveling with the family.

19 of 30 AVA the Elephant

AVA the Elephant (Season 1, Episode 1)

AVA the Elephant, a children's medicine dispenser, represents one of the first Shark Tank success stories, growing to become the cornerstone of a profitable kid-friendly medical brand.

20 of 30 Mission Belt

Mission Belt (Season 4, Episode 22)

The sleek and stylish Mission Belt forgoes traditional, and often awkward, belt holes for a more subtle ratchet system.

21 of 30 Zipit Bedding

Zipit Bedding (Season 5, Episode 18)

Inspired by the mess-free ease of sleeping bags, Zipit Bedding allows children and teens to finally make their bed without any groans and complaints.

22 of 30 PlateTopper

PlateTopper (Season 4, Episode 10)

Easy-to-use food storage device PlateTopper converts any plate into a sealed container of leftovers. Fun fact: Inventor Michael Tseng's pitch resulted in one of the most heated Tank sessions in the show's run.

23 of 30 Lolla Cup

Lolla Cup (Season 3, Episode 12)

This spill-proof sippy cup allows toddlers to start to learn how to drink from a straw in a cute and cleverly designed cup.

24 of 30 SMARTwheel

SMART wheel (Season 4, Episode 16)

Developed by a group of sharp teen entrepreneurs, the Inventioneers, this alerts drivers of their distracting tech habits and tracks improvements.

25 of 30 The LiddUp Cooler

The LiddUp Cooler (Season 4, Episode 21)

The LiddUp Cooler illuminates its contents just like a conventional refrigerator. Unlike conventional fridges, though, LiddUp coolers use customizable color LED lighting. Also, they fit in your car.

26 of 30 OrigAudio

OrigAudio (Season 2, Episode 7)

OrigAudio's Rock-It portable speaker turns any object into a speaker using its signature vibration technology. Who needs Beats headphones when you have, like, a cup!

27 of 30 The Spatty

The Spatty (Season 4, Episode 5)

The silly-named Spatty and Spatty Daddy save major bucks in scooping hard-to-reach stuff (liquid makeup, condiment bottles), all while doubling as a cake decoration tool.

28 of 30 Shell Bobbers

Shell Bobbers (Season 4, Episode 22)

Fishing Ammo's Shell Bobbers put shotgun shells to good use to attract fish. A double Shark Tank and Duck Dynasty promotion make these bobbers an instant hit.

29 of 30 Voyage-Air Guitar

Voyage-Air Guitar (season 4, episode 9)

This ingenious foldable guitar actually revolutionized how musicians transport their instruments, and there's now a whole new market for foldable guitars, including Fenders.

30 of 30 Solowheel

Solowheel (season 4, episode 7)

Who knows if the Solowheel will ever catch on, but an electric unicycle surely qualifies as a mind-blowing (and mystifying) Shark Tank invention.