Making a Christmas tree in little alchemy is a bit of a challenge. You'll need a few different items to get started. The first item you'll need is a pine cone. Place the pine cone in the cauldron, then add a piece of wood and a spark. This will create a log. Now, take the log and put it in the cauldron with a pot and a bucket of water. This will create a tree. Now, you'll need to add some decorations to your tree. You can do this by adding ornaments, lights, and tinsel.