Cable Concealment

I’m going to have my LSiC and LSi7’s closer to the ceiling, when I’m done with my remodel. What would you all suggest as a way to run wire as discreetly as possible?
I live in a rental that doesn’t have the option of going above the ceiling, and I don’t want to take the time/energy of going through the walls, or using a fish (I said fish, haha) to go from point a to b.