With a life-size version of the game Mouse Trap, sculptures that shoot fire, and even people riding around in motorized cupcake cars, the Maker Faire is where you can find everything you could ever imagine making yourself... even if you don't know why you'd ever want to. For the fourth year in a row, the festival in San Mateo, Calif. has filled a local fairgrounds with crazy gadgets, some more practical than others. Here is a list of my top five favorite things I’ve seen so far.

In the middle of the Maker Faire, the world's largest festival for professional and amatuer inventors, a team of Youth Radio producers is demostrating an invention of its own: a sonic collage made up of noises recorded minutes before on the fairground. Click on the player above to hear for yourself.

We're also covering the faire live on Twitter. Follow us: http://twitter.com/youthradio