I did too little. After finally fixing my long broken passenger seat gears, my driver's seat suddenly has an issue not 2 weeks later. I find the white cap on the floor, luckily, and putting it back on/in helps. But it keeps popping out so I need to glue or somehow get it to stay in.
I did replace brake, tail, and blinker lights with LED's. Not thrilled with it since they didn't get much brighter and the blinker is now a pale orange yellow rather than deeper amber - but hey it all runs cooler now I suppose. I actually think the LED license plate lights has a nice affect, and I really like the PFRAN 7W reverse lights.
Otherwise, drove it to work on Friday, to get beer and pizza on Saturday, and took the family to the pool on Sunday. Light duty.