RASKOG carts from IKEA - spray painted after they were assembled using the rustoleum paint in "ocean mist" for the mint and plastikote paint in "cameo pink" for the pink cart. Spray paint some plastic containers to match using a plastic primer beforehand.
DIY Lego table using Ikea Trofast storage system. On the top get a piece of wood or something for students to write on and then turn over to use Lego table. Then in the bottom put Legos in one, paper in other, crayons, etc.