'Looking glass' spray can transform pumpkins into these gorgeous centerpieces! Use a white spray first to get the best effect. Try this with dollar store pumpkins. Krylon K09033000 Looking Glass Mirror-Like Aerosol Spray Paint, 6-Ounce.
20 Halloween pumpkin craft idea: Easy last minute!!
How to string lights for Christmas tree - cool! Before I had only seen the "wind around and around until each strand runs out" routine. Maybe this would make replacing burnt-out strands easier? The whole article has good ideas from this veteran tree-decorator, like mixing sizes/types of lights.