Pallet bed frame with lights. Measure out the pallets to fit your mattress on top. Paint the pallets white. Put together while stringing lights inside. Add mattress, sheets, covers and pillows and illuminate the room. Im so making one for my room!
Like shipping pallets, wooden cable spools are another item that is usually found for free on Craigslist. Since cable spools are limited by their shape there are fewer repurposing options, but they make a great coffee table bookcase.