Check out the bizarre geometry of the Crazy Crate, or send your eyeballs into a wild spin at the Rotating Spiral Illusion. Word lovers will enjoy the games at the Typography section where you can play with some tough ambigrams. And be sure to stop by the site's Ambiguous Illusions section, featuring 23 of these extraordinary visual gems, such as the Barber Pole Illusion and the Vanishing Area Paradox.
Some people travel the world to help poor people in other countries.
But you don't have to travel far to make a big difference in your community. One girl got a group together to make quilts for homeless people. A church group, a school or one kid can make a difference. You can help build a house, make some new friends and make the world a better place. Kids Next Door is a great place to start.