All Kinds of Dog Supplies

This is what I've come up with so far:
Pet Rock
Koosh Ball
Chia Pet
Bottled Water
Spray bottle with a fan on it
Billy the Big Mouthed Fish
Antenna Balls
Baby wigs
Doggles (Dog sunglasses)
Lucky Break Wishbones
Flowbee
Mood rings
Candles that relight themselves
The Santa Mail website (not really an invention but a great concept)
The Tumbleweed farm (again...not an invention, but smart)
Sparklers

Remember....it has to be something cheap, kind of dumb once you think about it, and has made a lot of money.
I know I pointed out a couple of websites, but let's stick to "products".
ooh. I forgot about the foldable sunglasses, or the sunglasses that had mirrors on the sides so you can see behind you (not the kind for cycling though)