I think this is the coolest Etsy treasury I've been in. It's all about geology. Shhh, let's not tell anyone my geode earrings are made of polymer clay... It was made by YadaYadaYada, and you can see it for real until it expires on July 1 at 11 PM.
The Etsy treasury is a cool feature. You choose the work of other artists and display with a catchy title for all to see. Usually people do some sort of theme, and often they're very beautiful. I haven't curated one in a while, but when I do I usually illustrate the lyrics of a song. Good fun.