A Gorilla Torch. Holy shit. This is the most unexpectedly useful purchase I ever made.

I originally bought it for little photography projects but I ended up using it for freaking everything. It's got magnetic feet and adjustable legs, so you put it just about everywhere. I stick it to my computer case when I work on it, I've used it working on my car at night, stick it to the metal legs on my desk when I need to find a cord.. I find a use for it all the time. I've even wrapped the legs around my wrist when I couldn't find anywhere good to put it.

Pricey for what it is, but so worth it.