$350 (Pre-order price) Brooklyn street map quilt
These are white quilts of city maps, and the stitches are done to match the street patterns.
Brooklyn is available for pre-order, and they already do Boston, Chicago, Paris, London, NYC, SF, DC, LA, and the Great Lakes.
Check out Boston ($450)
I guess if you were really motivated and detail-oriented, you could also DIY one of these.