Sun clock that helps with telling time. This is a cute and easy way for kids learning how to tell time, because it is right under the clock and the rays represent the 5 minute intervals and that can make it easy for kids.
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.
Dry erase on plastic plates, hmm. From previous pinner: Perfect for math in focus number decomposition! Use a plastic plate and you can write with dry erase! Great to teach part part whole, fact families, etc.