Ok, Japan has made a lot of hilarious items for otaku's, although I can't really make fun of them as I have been soooo tempted to get a C.C. cover for a huggy pillow C.C. awesome (and don't say you wouldn't). However this one just made me lol, and is actually pretty damn cool.
The Magical Transforming Towel! Has a picture of a cutish anime girl on it and when it gets wet with hot water her clothes disappear! Sadly they do not include pictures of what the towel looks like after said transformation. I don't know how useful this would be in practical application as when I usually get out of the shower I get cold very quickly, so maybe you have to take it into the shower with you to get the transformation scene. Anyway, a hilarious product
if you know of anything similar to this please post, I know there's other cool stuff out there