Just a simple flourescent light, corded. The whole light is maybe 15" long, so it fits in reasonably tight places. Has a couple swivel hooks, so it can be hung on something.
I also have a 12v drop light, watertight, that has about a 12'-15' cord with alligator clips, so I can hook it straight to a vehicle's battery, and it will reach anywhere. It, too, has a hook on it.
I have a couple led panel lights, very bright, but short cords, and really only sit on a flat surface, so mostly use them for more general lighting.
Plus, I still have an old school drop light, or two.