I have had fun discovering ways to fund extra materials and projects within my classroom. Here are the two that have come most highly recommended:
Adopt-A-Classroom: Kind of like the Adopt-a-Highway deal, but you can get your classroom adopted by several sponsors. From what another teach told me, you only get about $100 over the course of the year, but it was enough for her to get some classroom supplies and a class set of books.
To support my classroom, go to this link: Rebecca McCoy Adopt-A-Classroom Homepage
Donor’s Choose: This website allows you to apply for mini-grants (usually $500 and less) to fill your classroom with what it needs most. Some teachers apply for class set of books and others apply for one computer at a time until they have enough for each student. I will most certainly be using this throughout the school year.
Good luck with the school year!