Oh, and I also did the museum scene... at the time I felt it had the most potential, and wasn't tied to the premise, but I don't even remember the other ones. I'm sure they were just as open-ended.
I assume that a lot of people's instinct was to have a kind of super-original and unexpected gimmick or twist to anchor the scene on, just like short films are often so attached to the "final minute twist ending." I imagined that a short short short film would be even more so.
So... I tried to avoid that completely, and man, it was hard. My scene focused on a conversation where the woman is hiding from someone who she thinks has been stalking her. Previously, she was too embarrassed to admit her suspicions to the man, even though it is obvious to the audience that something is up. The man dismisses her concerns anyway, and goes to talk to the other man at the end of the scene.
I described the space and the exhibit, and made it part of the interaction, and I also tried to tie in a lot of character moments which suggested a larger world but didn't elaborate or explain any of it. I also wanted to create moments that would be exciting for actors to portray as well as tell a good yarn, which, my theory goes, will elevate the filmed project (this is a new way of working for me that I've been developing for the last year or so). I hope that they recognize what I was after.
I would be happy to read other people's take on the scenes, and share my own, too.