Blackbird design had these in their Christmas book "Joyoux Noel". We love them! We have made sooo many. People keep asking to buy them from our display. They are super simple to make. Joy lives on oak lane, so you can guess where we get our acorn caps. Then the wool felts are just odds and ends that I just happened to have, mostly Weeks Dye Works brand. Joy will gather like a little squirrel this fall and if you would like some tops just stop by the store. We'll supply all that we can.