I don't have a basement, and my garage is detached and NOT heated (heck, I can see daylight through the walls in a few places...)
I've gotten sick of being cold while working outside on projects, so I built myself a heated coat!
Out of pocket costs was about $5. That was for a heated massaging seat cover from the thrift store. I can run the heated coat on wall power, car 12V power, and I even rigged it up to run off my Craftsman lithium drill battery!
More on my blog.
http://ecoprojecteer.net/2012/11/heated-coat/