I'd recommend Brazilian jiu-jitsu. Useful life long skill, they teach discipline, and belt progressions to keep them motivated.
GitHub - winapps-org/winapps: Run Windows apps such as Microsoft Office/Adobe in Linux (Ubuntu/Fedora) and GNOME/KDE as if they were a part of the native OS, including Nautilus integration.
I'd recommend Brazilian jiu-jitsu. Useful life long skill, they teach discipline, and belt progressions to keep them motivated.