Coincidence of Shapes: Cactus or Pod

.cactus valley.
Originally uploaded by emadivine

I'm back to thinking about cactus today. I have a painted glass tile that has been sitting with my metal clay for months. I've made several attempts at designing a piece to go with it, none of which suit me. So today I'm searching images of cactus for ideas.

This photo is fascinating to me because it ties my cactus ideas of today with the porcupine bead of yesterday.