This is one of my favorites. Make a simple chandelier out of a hula-hoop and a few strings of lights. Icicle lights generally work the best, because of how they dangle. Spray paint the it to the color of your choosing. White usually works best. Wrap the hula-hoop in the lights and then tie some fishing line around 3 or 4 sections of it and then hang it up. It can be used any time of year!