Don't forget Syncthing, I always suggest it first since it doesn't require a server or advanced knowledge to work.
You can selfhost Syncthing without having a server, using your daily devices.
We need more noob-friendly systems in this direction. Better sharable guidelines to get started into this approach.
Eternity
Oh, I'm sure we're all great parents here. I applaud you for admitting a mistake and having the humility to ask for advice, both excellent parenting skills in my opinion.
I believe the answer is always culture. Once better videogames are discovered it's likely that they will hardly go back to the bad ones (so that the problem of prohibitionism - which is only a temporary solution - can be solved).
- A good Invidious player with locally stored datas.
- AntennaPod fork with improved local music management (tags).
- A dedicated good PeerTube app.
Orgzly Revived
Try with home decor, a plant or a good lamp is always a good gift.
I've installed Flowit, Xeonjia, Parlera and Pirate Solitaire.
Divide et impera
I also was an user but Aves Libre is a very good replace if you don't mind the video editing aspect. But yeah, that app also probably deserve a good fork.
Let's face it, the MBTI has its own shortcomings and many of them are additions to Jung's thought. However, I believe it's the most pop system for introducing fundamental topics.
Your smartphone is already an always connected device, and you can manually do periodical backups on external drives which is a good practice in any case.
You can also set which device rules the file modification (sent or receive only as a folder).
I think it's ok for most of the people. If you have a tons of precious files to save I can agree with you, but I think this type of "off-grid self-hosting" is just the future of personal data management.