Dez had a good idea/space saver for males. It was 8" ducting standing vertically, with a cap and a cfl bulb installed into the cap. You can stick them in a small space and control heat by the height of the ducting. ie, if the ducting is 2' tall it will get hotter than one that is 4' tall. Or by cutting vents and closing/opening as needed. He has some pics in the 600, but maybe he will post some up here.