Oh, thanks for posting them! I really like them. Someone else called leaving zentangles or ZIA's for others to find "Random Acts of Zentangle" or RAZ, so I've been calling mine RAZ stones. I've started leaving them on the window sills of my co-workers (lucky we're on the first floor)., and in the planters in the lobby... and of course on hikes in the woods. I like to make cute ones for little kids to find there -- painted like frogs or turtles, or glow in the dark eyes looking out of eggs, that sort of thing.
These are really pretty.