Flâneurs

Ok. This might warrant a post of its own, but here's the general idea:

String Walk

You will need:
A city to walk in
A map of said city
Some string
A way of cutting said string
A way of measuring said string might be useful as well?
A pencil

Method:
1: Decide how long a walk you want to do.
2: Using the scale of your map, decide how long that would be on the map that you are using.
3: Cut a piece of string that is about twice that length.
4: Open the map up to roughly the area that you want to walk in.
5: Toss the string into the air so that it lands on the map. This may take a few attempts, depending on all of the usual factors.
6: Use the pencil to trace along one edge of the string, to mark the walking route.
7: Determine a suitable start (and end) point for your walk, based on all of the usual factors.
8: Walk!

Note that I haven't been able to test this yet, but hopefully I'll be able to at some point.

(Hopefully. Yes. We could also talk in IRC.)