The graffiti I think would be when they’re talking to Zorii and/or sneaking off to Babu’s, on the walls behind them.
That’s a cool idea, DarthMeme! We could also have things like anti-First Order propaganda (severed stormtrooper heads, or the FO logo with an “X” through it?), or maybe messages like “Skywalker lives!” or something.
I dunno, I’m just spitballing.