One of the biggest problems with any great idea is getting the seed money to make it a reality. There's a website called Kickstarter.com that let's people show off their idea and ask others to back it. Here's one such idea.

If you have a house cat, ever worry if they're getting enough exercise? Someone thought the only difference between a hamster wheel and the same kind of thing for a cat to run on is size. Would a cat use it though?