I also put a few Braille dots on few buttons and glow in the dark paint on a few important dots to make it more usable which really works, Braille especially.
Then... A few bookmarks in the firefox, jellyfin, navidrome, Spotify, vlc/MPV from mounted NAS etc.
I don't bother with any media/apps interface, I mostly see them as annoying and not needed with this KB/trackball setup.