I've been interested in LD for a good four or so years now but I've never had much success myself so I was wondering if anyone had experimented with creating a persistent world between dreams.

I don't just mean a city that looks similar each time you visit it or anything like that, I was thinking more along the lines of whether it would be possible to create a room or house where you could keep tokens brought back from individual dreams, like a trophy room or something.

Has anyone done anything like this?