Last autumn I popped up to Edinburgh from the North of England for State of the Map Scotland conference. Together with Edinburgh College of Art in Evolution House participants took part in series of workshops “Map.Makars”
I took part in a memory map of the city. The rules were: no looking at other maps, the map should include the venue, the castle, the train station. We drew, from memory the city on large pieces of paper. Gregory scanned/photographed these and put these on mapwarper.net to stretch them to fit. he then combined these together with an interactive and animated transparency control to create the Hand Drawn Map Collider “No-map Map“ Give it a whirl! http://www.livingwithdragons.com/maps/nomap-map/
My map, in case you were wondering was possibly the least accurate of them, coming from furthest away! http://mapwarper.net/maps/10907
thinkwhere 
Thanks for mentioning this Tim, it seems like a long time a go now but I had fun quickly putting the no-map maps together. Perhaps I should repeat the activity again, maybe with a local community group to see what the result is like.
I wrote a little bit about it myself at http://www.livingwithdragons.com/2015/10/the-highlights-of-scotland