How about pleaseplaywithmycats.com? Audience controls robots to play with cats.
As ridiculous as it sounds it would probably be immensely popular, tho animal rights groups would go nuts.
Why would they? Cats have to move to stay healthy, but home cats are notoriously lazy. I feel slightly guilty that I play with my cat too little. Robo-laser is on my project list, though I wouldn't feel comfortable leaving camera inside my home that has unrestricted Internet access.
I never thought this would already be an actual thing, could you give me some links?