Look into providing hooks into clojure functions from the Lua interface, letting you add functions to the computers. Also, a REPL in there would be.. amazing. Permission locked, of course.

http://www.computercraft.info/
http://www.computercraft.info/forums2/index.php?/topic/4587-cc1481mc146-miscperipherals-23/

Also look for any custom events that get thrown that could be picked up and used.