So, first, sorry if this is the wrong place to put this, but I was wondering, because of an idea I had for an upcoming adventure involving the players getting stuck in a sort of limbo between two planes with qualities of both, but I'm not really sure where to go from there, or what sort of things to populate it with, I'm thinking between material and astral. Any help would be neat and appreciated
Maybe some sort of "ghost realm", similar to the Plane of Shadow? It might hold "echoes" of things and creatures dead or destroyed on the Material Plane.