litter box
 

If you don't mind having a not-so-pretty litter box, you can make this litterbox, so much more cheaper than from pet shop

Materials needed:
-storage box (get a cheap one made with softer plastic, easier to cut. If you want it to be covered, get a tall one.)
-sharp cutter

just cut a hole and you're done!

Here's mine. Not very pretty but my boys are fine with it {victory}
http://i128.photobucket.com/albums/p...e/DSC04464.jpg