Best "useless" gadget

[FourBear]

What is the best "useless" gadget you can think of? By "useless," I mean that the gadget has a greater cool factor than increased utility factor. At least, that's what I think I mean. Something like gadgets that are mostly for kicks, and don't necessarily improve upon a way of doing something.

[Al]

There are so many, just check our Wacky Gadgets (http://www.coolest-gadgets.com/category/wacky-gadgets/) section. The most useless for me at the moment must be baby toupees (http://www.coolest-gadgets.com/20060902/baby-toupees/):
http://www.coolest-gadgets.com/wp-content/uploads/2006/09/baby-toupee.png

[palefrost]

Off the top of my head i think electric toothbrushes. I dont think they really brush your teeth better then the orignal brushes. THey just vibrate in your mouth. I never got that.

[Giorgi]

They got lot of useless gadgets on Discovery Channel