31 Genius Hacks For Your Elementary School Art Class. I& not an art teacher, but we definitely do a lot of art in my class, and this is very useful!
15 Classroom Decorating Ideas to Rock this School Year
Early Finisher Task Board, keep forgetting to do one of these in my class!
Secret Recipe for Art bulletin board idea. Elements of art and principles of design.
Art Bucks for the art classroom: use them like classroom currency, play art games, use as positive reinforcement, trade/barter for supplies, bid on classmates' work! This might be better than the apple tree and MUCH less work.