Keep your repair log in your car so you can update and reference it as needed. Not having to look those things up every time they need to be replaced is convenient.
You may also find it handy to record size information and parts numbers for things like windshield wipers, the oil filter, the air filter, and any other replaceable parts. If you or anyone else do anything to your car, it needs to go in the log. Without good records, you might not have oil changes, tire rotations, and other regular maintenance items performed on schedule, and that could lead to costly repairs or even put your safety in danger. It's just as important as repairs, maybe even more important. This might include the mileage at the time of service, whether the work was under warranty, and any additional work the shop said your car would need soon. Every time you have work done on your car, take a minute to jot down all the important details: the date, the name of the shop or person that made the repairs, how much you paid, and any other relevant information.