Purr Detector

If you need a Purr Detector collar that lights up to know when your cat is purring, chances are you're probably too inept at life to properly take care of one. And if you have a problem knowing whether your cat is purring for other people, you're probably too jealous to have a significant other, and probably have not one, but eighty cats. And if you just need this because you think it's just funny and weird, well, you're right, it is.

Poipoi robot vs. kids in goldfish catching battle