Drat. I found what I thought to be the perfect solution for my lens problem in the hardware store tonight. A couple of clear plastic thingys that go under table legs to protect carpet. They were the perfect size, appeared sturdy enough, and at 69-cents each, fit the budget.

But alas, the hot breath of my twin 20w Malibus brought them to their proverbial knees. After 15 minutes they became soft and squishy, and what's worse, so did the PVC! I think I need to go back to the drawing board. Hmmmmm......

The good news is I got an hour and 15 minutes burn time with both lamps on, which is more than I need for my one-hour commute. Now if I can just keep the thing from going Chernobyl.