does organizing the garage even lead to anything yet?
A couple versions back it was a good source of cash early on and IIRC + points with the father, which was quite useful as another means of cash since you would basically be hitting each family member up for cash every time your relationship level with them could bear the points hit that entailed. You could mow the lawn, organize the garage, etc. which each gave a little money, and then ask the father for money, talk to him a few times, ask for money the next day, etc. This was helpful when it was really tough to scrounge up money for basic items early in the game.
At this point, IDK... there are a lot more ways to earn money in the game now, hell you can be working at the gym and/or clothing store very quickly if you know what you're doing, and pulling in something like 80-$100 per shift. Besides once you get day trading it's all over, just printing money basically from that point. My last play through I had millions and millions in the account, if you just work every day for a week or two and put it in the day trading account and optimize it up to the max, then optimize it again a couple times each week when it dips like .01 or .02 below the max optimization level, it grows so crazy fast it's hard to believe.