With DIY projects, it's easy to go from professional MacGyver status to jury rigged disaster. With that in mind, be careful with this one—something about it just screams "Fire hazard!"
But believe it or not, there's thrifty (cheap?) guys out there to craft brilliant DIY projects like this one to save even more dough: By hooking a digital thermostat up to his space heater, Jeff of MightyOhm allowed himself to put his space heater on a temperature timer!
The original motivation for this was that I wanted to lower the temperature of the heater at night, reducing my energy bill, while still being able to wake up to a toasty room in the morning by setting the heater to turn on full blast 30 minutes before I awoke.
Check out the whole project here at Instructables, if you feel like taking a walk on the wild side and trying this yourself.