A neat way to fold a sheet of paper
I wonder why this hasn't been a standard for maps for years.  By far the most frustrating thing about road trips (pre-iPhone) used to be dragging out the map then trying to put it away again.<p>Also, as a total aside, this: "over their conventionally folded*" should be punishable by death.  Putting an asterisk next to something then not explaining it is pure evil.