The plastic containers that Crystal Light drink mix packets come in are perfect for craft storage, for buttons, beads or whatever small items you have. They're see-through, stackable and have tight-fitting lids.
My son always comes home with a mess of nasty broken, crushed, waxy crayons in the bottom of his backpack. Those Crayola boxes never hold up. So, i used empty crystal light containers to make him protective, easy open crayon and marker holders!