Car crafts?

[myspecialhell.livejournal.com]

I recently got a new car (a B.A. Station Wagon, thank you) and I'm working on pimpin' it out, so to speak.
I checked the memories and I couldn't find anything specifically relating to it, so I was wondering:

What are some fairly cheap ways you've tricked out your rides?
haha. And I'm talking cute, awesome, funky, crafty ways you've made your vehicles your own.
Not just Wal*Mart seat covers and dice in the mirror.