Display Wall for your desktop.
This is simple Google Chrome Packaged app that lets you generate your own modern art desktop display wall. The idea is to use it as initial display before your main presentation starts. You can reveal only parts of the desktop to peek viewers interest. Subsequently you can close Display Wall tiles one by one by clicking in the center and revealing the main presentation.
When the packaged app is launched it starts with one display tile. The tile shows randomly generated circles bouncing around in a canvas. The user can click on 8 quadrants (N,NE, E, SE, S, SW, W, NW) to add a tile in that direction. Clicking on the center of the tile closes that tile. A nice modern art display wall can be generated this way.