This thing is a respoe to the trendy status-indicator USB lights on Kickstarter. All you really need is something to show busy or available, focussed or flexible, red or green. To make, just print the flag_half in two different colou, then print the base and slip it in. I used super-glue to stick the halves together and blu-tack to stick it to my monitor. addamain made a base for this, so you can stand it on your desk!