Tomato cage wrapped in lights! You could get very creative with this. Add faux green christmas tree garland, then add lights. You could use all sorts of different garland like snow garland, holly, pinecones etc. Buy a plastic outdoor urn/vase, fill it with dirt and stake it down into dirt. Instant, inexpensive Christmas tree for the front door!
Tomato cage & lights - one thing I did different was to get honeysuckle vine from my parents farm and wrapped it around the tomatoe cage first, then wrapped the lights aroung it - it looked great. You could also buy grapevine at a hobby store and wrap the tomatoe cage first, then add the lights. Could be used as a large center piece or outside by your front door.