magnets + tin cans + cookie sheet
Yarn organizer. Clean, empty "wipes" container or tennis ball canister works too. (Poke a hole in the lid and thread one end of yarn through hole.) Easy to store too!
Use a spice rack for all those miscellaneous desk items.
Teaching 2 and 3 Year Olds: A Collection of Sensory Table Ideas
paper weaving. MAK note: love the ideas of using all kinds of patterned paper or painted paper, toss in some fabric strips or ribbons, and ....