Mini mag! Saved the day.
At church, we had a wet spot on the wall. Turns out, one of the over head air handlers, the drain clogged. The water got into the wiring, and so the light in the mechanical room didn't work.
Fortunately, I was able to clear the drain enough for now. But, that pocket mini mag sure was useful. Yeah, I had other lights. But, that pocket light sure is convenient.