[nebula8804]

Personally: I'd buy a house in Venice beach (on the beach). Purchase the top of the line Mac Studio + their best monitor...and I'd spend a full year sabbatical meditating and learning how to do proper software reverse engineering alternating with more and more problem sets from Project Euler. With my significantly improved programming and reversing skills, I'd then join a bunch of teams reversing all the classic games so that the code is preserved for all of eternity maybe even try my luck at improving the abysmal desktop experience on Linux(a tall order I know). After that, i'd probably spend as much time as possible meeting people in order to find someone i'd like to spend the rest of my life with.

I know its not exactly your scenario OP but if the 2-6 hrs a week are all on one day, then you could spend the other days on something that really benefits you long term. We don't know what your personal situation is like but for me(as a person in their mid 30s) I feel like focusing on personal development while also understanding how quickly youth and youth health disappears would be my top priority. That could be in the form of really mastering a skill that you will use for the rest of your life, or building personal relationships that will be with you for the long haul. Either will allow you to look back and be proud of the time you spent.