Want to show off my solution to add shifting on the bike for my son who is too inexperienced to use shifters on his own.

To be clear, this is not for shifting while riding the bike but to adjust the ratio depending on the elevation where we ride. My son just started riding with pedals this year and he’s gone on a couple trail rides with me. I had fed a cable through one of the stops to hold the derailleur in place and would loosen up the nut and pull it over to change the gear. I wanted to be able to adjust the gears more easily and don’t want to introduce him to shifting yet because there are other basics to master. Proud of this because there also wasn’t a good spot for a bottle cage because the seatpost has to be fully inserted. Another bonus is I can now mount my GoPro facing backwards to get footage of the giggles.