I love your irises David, and kudos for cutting down on landfill items. Here is an iris I made out of a discarded fan blade.
All I did was bend every other blade up and the other three down. I was going to paint it but when I took it out to the garden it matched some stones so I left it plain. Needless to say I keep a lookout for fan blades. Even the ones that do not have six blades make nice 'flowers' in the garden. Thank you for posting your idea for the soda cans. Keep 'em coming!