What an awesome idea. I cannot begin to tell you how much money I've spent over the years on things for the classroom because it wasn't in the budget or because a director or whoever deemed it unnecessary. I should own stock in the contact paper company. Seriously. And how many times did I run out of boxes of tissues before the year was over? And really, I cannot name a single time that there was enough colored tissue paper for a single project I've done.
And I'm not a wasteful teacher, either. I save every little scrap of tissue and construction paper. I get newspapers to donate the ends of their rolls of paper for art projects. I use the backs of company letterheads that would be tossed out every time someone goes through "rebranding." I am the queen of wallpaper and carpet scraps. I melt crayons down into multi-colored sticks. I make my own paints, pastes and glues wherever possible. Every container for manipulatives and art supplies used to be a container for something else -- oatmeal, chocolate milk mix, baby wipes... I could go on forever here.
Now, you can sign up here, add items to your wishlist and send a brochure to your parents. If they want to donate items, they can do so and it's tax deductible.
Give it a try. If you're already using this system, feel free to leave a comment and let readers know how it's working for you.