The blog Apartment Theory has a plethora of posts on using maps as art for your home here, here, here, here, here, and here. These posts go beyond the "hang pretty map on wall and enjoy" but instead utlize maps in a variety of creative ways. (I already have the map shower curtain!)
What ways do use utilize maps? Are there any map no-nos with you (I can't stand putting pins into maps to show where one has been)?