Many vehicles owner's manuals have a maintenance log in them. One truck I used a small notebook. I use that to record date, mileage, and work done - including things like tires. Until the kids moved out, we had multiple cars and trucks and I couldn't keep track of everything unless I wrote it down.
When (or if) you end up selling the vehicle, it looks really good to a buyer when you can show maintenance records.
Oh... and it is a good thing to mark parts like oil filters. I've had work done at shops that I questioned (to myself) if all the work had actually been done. Marking the parts confirms if they've been replaced or not.