A long time ago, back when I DM'd for 2e in high school, I used a pretty sweet glossy poster map of the Forgotten Realms (that I got from the Boxed Set) as the map for my own homebrew world. Sure, everyone knew it was the Forgotten Realms map, but I hacked it up, adding new cities, making some old ones ruins, changing some roads, etc. No big deal. It was really just something to have on the table to add atmosphere (we were more dungeon oriented). I think that box set also had a clear plastic sheet that could be used to consistently measure overland distances (helped us gauge random encounter frequency between dungeons and towns) and a few city maps (used for atmostphere and the occasional chase through the streets). Has anyone got any recommendations for other box sets, in or out of print, that have great maps and map tools that I could use for my own world?