What is chindogu?

According to "the nonist" it is "the not-so-ancient Japanese art of inventing ingenious everyday gadgets that, on the face of it, seem like an ideal solution to a particular problem. " Actual use of the gadget however spawns fresh problems. Good to use chindogu for the fun of doing it. Forget about patenting. Here's a site showcasing some samples. Prepare to be entertained, enlightened or entertained (in no particular order).