We had more fun with this cake than any of its predecesors, mainly because of the staging. My father has worked in the mushroom industry for twenty years, and this is essentially what a crate of compost looks like with tiny buds sprouting up (except, of course, for the gigantic monster 'shroom in the middle, which--stem and all--is the cake here). The "compost" is crushed-up Oreo cookies, and the other tiny fungi are leftover mini marshmallows. Each layer sits on a cardboard platform which is in turn supported by plastic dowels. The fondant was super simple, since it didn't even need to be dyed.