At the Santa Cruz Maker Faire, Idea Fab Labs will be showcasing its augmented reality Virtual Sandbox. Built from a PC running Linux, a video projector, and a Kinect game controller, the sandbox projects a topographic map onto sand that you can mold. As you reshape the sand, the map is immediately updated. You can create snowy mountain peaks, or water-filled valleys, and experiment with the effects of different terrains on water flow and drainage.
http://www.santacruzsentinel.com/article/NE/20160407/FEATURES/160409779