I have in my glove compartment a small accordion file. I store everything you need for the road , registration and insurance information, emergency contact numbers, maps, and directions (file them instead of having to rewrite them every time-we travel a lot for soccer/dance/baton & I have all of the my mapquest directions in the file).
5. Receipts (major maintenance)
6. I'm going to add a little phone book with all my important numbers & addresses in it.
Works for me! For more great ideas visit Rocks in My Dryer Check out some of the past WFMW posts as well!