For two years now I have repeated it almost like a chant (try it, it has a lovely rhythm) to the intense irritation of my daughter. Finally, after collecting and Pinning a multitude of projects I went out, bought the supplies, and made it already. These are my mushrooms. The mold? A no longer used I KEA potty for the top and a used McD's cup for the stem. Made some pots too but i am waiting for them to dry more.
I think I like working with leftover concrete more but these may be ok. The front mushroom which is one day drier is very light.