they in themselves are a piece of Mother Nature's handicraft.

I used to take photos of them when I spotted them on the trees. If you look closer, you can see the layers and the lovely colors, but it's true, what I've seen so far was not suitable for making things of it as it was the flat one, but regardless, it's interesting.

What I love about them is that it's natural raw material, not artificially made in labs or factories.