Here's an old painting (it's from 1991) that was based on a shoe ad I saw in a window in Winnipeg. I liked the simultaneous vulva/phallus shoe, but also the fact that nature seemed to be in revolt.
This piece is about six feet high - we used to call paintings that big "kunsthalle" art because they transparently aspired to belong in the sort of big institutions that, say, Anselm Kiefer was being shown in back then (and probably still is).
Click on it to see a big version.