I am also of the group who repeatedly sees the mastadon, followed closely by the mountains. However, I had never noticed the feather until just now and I it that much more for it.
+1 to Eugene and the sticker idea. I'd get one. They might could even be used as a 'free gift' for purchasing a membership? Or maybe just offered for purchase to Members? I won't suggest 'availability to M-LIFE'rs only' because I would really like one =)