Christmas Tree craft

Prep:
cut out triangles of different sizes in green construction paper.
cut out a "trunk" from brown paper.

Activity:
Have child decorate the green and brown cut-outs.
Have child glue the cut-outs to a piece of paper. Guide them to shape it somewhat like a tree ;)
You can also trace an outline of a tree out on the paper and have the child match the shapes then glue them on.