For those of you in the New York area, you probably know about Materials for the Arts. If not, it's worth a visit. It's a resource center for art teachers/artists who are willing to use materials given to this non-profit by companies for redistribution.

If you're not from the NY area, maybe this organization could help you. It's called Donors Choose. Teachers ask, donors choose, students learn is the motto. Not sure it's that easy, but I get the point. Heard good things about this program, though haven't tried it myself. But the idea of allowing anyone to help a teacher overcome financial and material constraints in the classroom is brilliant.

-cr