I wanted to play around with tactile maps a little more. So, using the system of notification here, I made a treasure map for module B1 In Search of the Unknown. I used the small image of the tactile map from Greenland as a source, so the resolution is pretty crappy. Anyway, a shifty fellow in a tavern sells you this:
Oh, and put it inside a bag, so they can only feel it if they are supposedly using it in the dark in-game.