I use a small UVB bulb on a timer for a day light cycle (Exo Terra UVB100 13W). Supplemental heat beyond that isn't needed in my case because the home heat is set no lower than 65 F.
I've recommended ceramic heat emitters to others over night lights, as they won't interfere with dark time at all. Some decent low-end thermostat brands are Big Apple Herp and HydroFarm; always regulate any heat element with a thermostat for safety.