Christmas trees to decorate is a mod that adds a new type of tree to terrain generation, the Christmas tree. Thus, wandering the world, we can find Christmas trees that, when cut, will give us the tree and the lights or decorations that particular tree has. So if we cut down many of these trees, we can create trees with many kinds of decorative ornaments and with different kinds of colored lights.
Once we have cut some Christmas trees, if we prefer, we can simply right-click on any of these trees that we find, since this will access its interface and we can take the lights and decorations without having to cut down the tree. These decorations are varied and they can be placed in various positions, in fact, according to their own creator, there are up to 1323 possible combinations.