I took one of each shape we had and tested with the pipe cleaner folded to see which length I needed for the size of his hand and cut the pipe cleaners I needed to have a handle for each and got the glue gun. Just put a drop of glue in the hole, folded the two pokey extremities in the hole and stopped before I hit the other side. I also took half the shell of a nut and glued on a pipe cleaner handle, as you can see. Took me about 5 minutes to make.
He wasn’t quite sure about the nut but he had fun for quite a while with those, stamping away as you can see