Handjobs are also good after a long game day
but that's more of a job for my girlfriend.
One thing I sometimes do is bring a towel with me after the game to sit on (as well as a change of clothes) just to keep any dirt you may pickup off the seats as much as possible. I also bring a pair of running shoes (and a plastic bag for my boots) to change into to keep my rides car clean after the game. It's all about respecting your rides car and keeping them happy or you may not be able to get a ride in the future.