Cheap and simple plug in thermostat
I recall a thread recently from someone looking to add a thermostat to a portable electric heater and think I may have found just what they need. It's called a "Thermo-Cube" and costs about $15.00. It's a plug in thermostat, made in different on/off temp ranges, some for heat, others for cold.
If any of you want to avoid runnning out to your GH in the middle of the night to turn your portable electric heater on or off, one of these little plug in thermostats may be a cheap and simple solution for you. Ditto for floor fans in summer.