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.
Math Concepts: This is an adding machine! It is super simple to make and fun for the kids to learn about adding/composing numbers. It will help those kids understand the equal sign in a way they haven't experienced before.