I love my weekly trips to the dollar tree! I'm always surprised at the activities I can put together for less than $5. In the school section I came across these multi-colored magnetic shapes. They came in packs of 10 mostly random shapes but a few squares and triangles were included. All I had to do was hop two aisles over to the kitchen section and pick out a cookie sheet that was big enough for all the pieces to fit on to.
Once we finished I let him have a little free time to play with the shapes and look what he created. He said it was a dinosaur with a tail! I see it :) I'm so glad to have tracked these magnets down. Coop has had a blast and the best part is the clean up is ten times easier than legos!