i would love to make an internet cockpit in my room, where keyboard shortcuts could be ported to external switches. a switch for new tab, a switch for close tab, a throttle lever for monitor brightness. you get it. the opposite of efficient in every way, but would be loads of fun.
Related: if you're into magnetic tape era computing, check out http://www.masswerk.at/google60/
its a google search modelled after an old IBM360