Algodoo

A simple 7x7 laser display that uses collision menus to stop beams and "trap" them in small boxes. This display is the max size that you can create using my simple method, however by stacking the lasers and displays you can expand infinitely upward, and by combining displays you can possibly create a 14x14 square display. This display plays a simple animation of scrolling red. If you want to see/program the lasers, delete the large block to the right (it covers the lasers to make it look good). You could possibly script the laser colors to use variables as colors, and make external machines set those variables to create a monitor. The possibilities are endless.
If you use this display in your projects, or create a derivation based on it, please credit me.