I have this one (or one that looks just like it). I stole it from my wife's craft stuff. She used it for years before I took it. Works great for shrink wrap. I was using it for my film-free waterslide decals, too, but it gets too hot for that so I switched back to the hair dryer (the heat gun was setting the toner as if it were in the oven, not giving me a chance to clean up before baking). So it puts out a good amount of heat, too.
Well, for northerners (or well south of the equator) it beats shovelling the snow on the driveway... Just make sure it's turned up enough that the snow is vaporised — you don't want it to just melt and turn into black-ice.