Need RP Vignette Ideas to test out a new group

I have about eight possible players for my next game and am trying to find the core group. I asked the players about systems they might like to explore in some one-shots to learn how we play together.

One player suggested running Vignettes instead of a proper one-shot. This is a reference back to the start of the current campaign where we roleplayed key events from the backstories / character webs on how the players first met one another (4 45-min vignettes in a session). What she was essentially suggesting is some player-player roleplay scenes with no rolling or system. Essentailly take the crutch away and see if they could just jump into the story.

It seems like an interesting idea and has me thinking of little scenes that might be interesting to play out with strangers. I think I might do my information gap task clue type idea to seed the RP. Anyway, I could use some ideas. As I am brainstorming ideas, they keep looking like campaign starts.