Well, I've had to mount some lights in some pretty odd locations, including on a ceiling-mounted basketball hoop. We still have to do some odd stuff in the theater, though, since it was originally built as a high school commons and only converted to an actual theater about five years ago; hell, we're only now getting acoustic paneling this summer, and we still don't have an actual control booth. Our
current house lighting
system (which is also getting replaced this summer, thankfully) consists of a bunch of gym-style fluorescents, so I have two
PAR cans hanging that I shine on the walls before they're running all the way; those things are hanging from diagonal pipes near the ceiling.
Thankfully I'll get to take those things down after the new houselights get installed, but I still have to do funky stuff every once in a while, like hang a couple of ellipsoidals (also off of random pipes and I-beams) to
blind the audience during an actor swap, as in the transformation scene during
Beauty and the Beast. Those yokes are definitely pricey, but they might come in handy.