to restore dry erase boards that are hard to erase: spray a clean board with wd40, wipe dry with paper towels. the wd40 fills in the dried pores of the board that hold in marker ink, making it easier to erase.
Go to your local Lowes or Home Depot and have them cut a showerboard into 12"x12" squares for you. It will cost $10-$15 instead of $100 for a class set. Also, buy RoseArt brand erasers at Walmart for about $1.00 each during back to school sales and have the hardware folks cut them in half. An even cheaper option is to cut a piece of black craft felt into 6 pieces. Black dry erase markers from the dollar store work just fine, but avoid red as it stains your boards.
Hall Pass - Print on card stock and put into ID badge holders on coil key chains (both from Walmart). Blank pass at end can be written on with a whiteboard marker and then erased (for students who have to go somewhere else in the building). These are waterproof (seal the top opening with packing tape or buy self-seal ID badge holders) and kids wear them high up on their arms so they don't get wet/dirty in the bathroom.
boxes from the Target Dollar Spot, covered them polka dot scrapbook paper, and attached them to white board with magnetic clips. They hold my remotes, chart markers, dry erase markers, erasers, and board clips.
DYI Duct Tape Baggie Quilt - used to display work....but this website has TONS of DYI crafts and manipulatives for the classroom... or even a fun way to make journals out of a gift bag... Classroom DIY