A prop doesn't and A cove has no water. A running crew rarely gets anywhere. A purchase line will buy you nothing. A trap will not catch anything. A gridiron has nothing to do with football.
Strike is work.
And a green room, thank God, usually isn't. And lo' we the tech's build the set and hang the lights and cue the sound and fly the drapes and build a wonderful show. Stay away from dropcloths and freshly painted backdrops. Every year, someone has either taken a nose-dive on a wet dropcloth, or walked across the backdrop after work has been completed, tracking paint all over the place. Hope you break a leg and get on-stage so that you get paid.