Paint Bag Writing Tablet - Put some finger paint or tempera paint into a sturdy freezer ziploc bag. Seal it well and smoosh the paint around the entire bag. Children can practice writing letters or sight words.
I could totally do this with money-- dollars on a pumpkin then popsicle sticks with bills and coins that add up to the amount. Addition/subtraction sorting - child needs to determine which sticks add up to the number on the bucket.