My oldest boy is a lifeguard. They’re in demand! Some facilities offer lifeguard training starting at age 15 (second son is taking it this summer). First-aid training is also valuable, and reasonably priced at a county Red Cross facility.
Maybe if you let his computer get so messed up it didn’t work at all, he’d be motivated to learn more about its operation and maintenance. My reply for any electronics issues is “Don’t talk to me, I have no idea.” They either figure it out on their own, or get help from their Dad, but he makes them pay with extra labor.
Ask him if he would be interested in SCUBA training. Heck of a demand in the entertainment industry and you get to visit exotic places. Pay is not high but when he becomes a mariner you get the time of your life.