RandomJoe,
Based on cost a small inverter is a good way to go.
eBay several 100w inverters for $10 including shipping.
Power is 110ma with 12v in or 1.4 watt,
Switch the 12v side, no stand by losses, running 1w loss is not much.
Small inverters with one or two CFL works well.
Best deal was two 75w for $13 shipped, guy is out, wish I had bought more than 2.
Small inverters do not have fan, when running for a while they get warm.
Consider adding larger heatsinks if not too much trouble. NO fans.
Have fun,
Scott.