I was also browsing through some books trying to decide what to keep and what to recycle. I came to an old book called "Nature at hand" (so old it doesn't have a ISBN). It was written by Joan Wheaton Buma. You can find more about the book here.
They had a craft in there that looked intriguing.
Take a piece of paper, fold it in half, make a tree shape that is symmetrical.
Go outside and find a pine tree and take off a short piece to use as a paint brush.
Put your paint into a low rather flat container and use the pine branch to paint with. It will take a bit of exploration to do.
As you can see, the lad and I had different results based on how we painted.
If you want, when done, you can decorate your trees. We'll be using ours in finishing up our Jesse Tree Devotionals. the tree we cut out is too small and we'll use these little trees to give more room for the story cut outs. :)