well after my little neice and my sister and mother and myself went down to see the harry potter props and sets at the museum of science in boston, we wandered through the gift store. Whare there was to be found all sorts of over priced items and only half of it was quality stuff.
There was however an elaborate and complicated marauders map (a magical map of the school castle, that has the structure formed by written words) and a map of Diagon alley.
Now I got to thinking that it might be kind of fun to make a marauders map of my own. Maybe not done with letters but actual mapping. we'll see about the lettering.
Right now I'm just in the idea phase. but there are some really interesting ideas about folding techniques that could result in some interesting map making.