I have had many a reliable POS as a daily driver throughout my life. No payments, liability insurance only, if the transmission goes it’s off to the wrecking yard. Both my now adult kids started out with cars far older than they were. That was some valuable education. We would start off with the stuff that could kill folks… brakes, tires, front end. Then we would go through ignition tune ups, belts, hoses. Actually, first step was usually to clean out under the hood so problems were easy to spot.
Bought each his own basic tools, each tool etched with initials. Break or lose one, kid earns replacement.
Since they had more time than money taught ’em things like rebuilding an alternator. Brushes and bearings are usually only a few bucks.
The payback for spending that time with them: I’m now old (70) and feeble (arthritis). My most used tool is the claw pickup thing for tools and parts I drop Either kid is willing and able to help me out with wrenching.