Probably going to be Monday at the earliest when I can put a CS together, this is a crazy busy weekend for me. Biggest questions from me are how much or little detail you're looking for in the worlds we come up with, and is it possible for characters to have a memento of some sort from their world? Nothing of power I'd presume, but something like a significant souvenir of sorts?

EDIT: Whoops, need to read better. Scratch that second one, I see the section now.