I have been playing around lately with a lot of foam and with a quick trip to the local craft store, foam in hand I dove in head first. I have tied about 9 dozen different foam hoppers, stones, ants, beetles, and gurglers. I have been using a dual color foam I developed which seemed really easy to do and wondered why I have not seen it before.
Here is the whole family together
You can get really creative with the foam. Just some zap a gap and a little pressure and you can make these are well