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lavalamps.jpga pair of red & green lava lamps connected to common computer-controlled X10 home automation hardware, reflecting the status of scheduled software builds for professional computer programmers (who seem to coin these simple ambient visualization devices as 'eXtreme Feedback Devices for monitoring complex systems'). the green lava lamp depicts successful software builds, while the red lamp denotes faulty builds or late deadlines. a full tutorial description is given & a cheaper version is also available, displaying the status as virtual system tray icons. see also diy ambient orb & ambient devices. []