What I do is get around 5 small 2 by and simply drive them into the ground at an angle so they are all touching at the top like a small tree. Then I easily put the lights around the post's and plug them in and there is your tree.
Beautiful idea for Christmas or holiday decor, a lighted pinecone branch centerpiece using clear vases, lighted branches and pine cones. You might even be able to find special lighted pinecones that are already on the branches. From Trendy Tree.