I thought about doing something similar with flipping small vintage musical keyboards. They might be easier to fix than cell phones since the hardware is a little more accessible.
You’re a smart guy. I think its a good idea and might be challenging enough to keep you interested. Its good if you can find a “side hustle” that people need and you enjoy as well.
I dont have the technical skill you to so I myself was thinking about opening up a breast support shop. I think about all the poor women with large breasts that need my help. Hard on their backs and all. I would like just walk around with them and hold them up.
Lol. sorry if that sounds pervy. Its early in the morning, I just woke up and I was trying to think of something amusing to say.