I sometimes wish my workstation had a few more single-purpose hardware controls for system-level settings - a physical slider for volume, status LEDs for critic

I sometimes wish my workstation had a few more single-purpose hardware controls for system-level settings - a physical slider for volume, status LEDs for critical system services, a zoom dial, a big red magic-sysrq button with a safety cap, some nice solid on-off switches for wifi, networking, background Dropbox syncing...