As few years ago, when my son was a teenager, he had selective hearing, would never come to dinner on time, never do his choirs etc.. all he did was play xbox and scream at his friends down xbox live until 2 or 3am.. typically moody teenager!
My wife got close to breaking point... I ended up creating a web app, that would enable and disable his Internet access, or limit his to school websites etc, or set a schedule for his access, which could be selectively ended when he's good.
I then brought a load of those Amazon wifi order buttons, and tied each button to a different feature.. so she literally pressed one button to suddenly get him to his attention.
To be fair, he wasn't terrible, and always did well at school...
Audiobookshelf would be the primary donation, as I've had thousands of hours of usage from it... I use it everywhere and all the time, when I'm working, travelling or just relaxing. In addition, I've often liked the idea of sponsoring a couple of features (A list-view, and folder-structure browsing)