Okay, so these aren't exactly kid-centric, but what child doesn't love miniatures? These gorgeous little thimble pots we spied at the blog Resurrection Fern would fascinate any nature-loving young one, and the lichens and mosses within are hardy enough to withstand a bit of handling.
If these entrance you, you should definitely head over to the Resurrection Fern shop on Etsy, which sells, among other things, amazing crochet-covered rocks. ("Crochet-covered rocks?" you're asking yourself. You'll just have to check them out.)
Via Heavy Petal