Teacher confession: what do you do with the art kids give you?

We just hit that part of the year where every nap mat is a paper weight and the cubbies are overflowing with glittery masterpieces. I've kept every single one so far, but my apartment is starting to look like a museum of other people's children. How do you decide — do you toss them in the recycle bin after a while, or are you the type of person with a box marked 'memories' in the closet? I need a system before the end-of-year art tsunami hits.