Here’s a rather cool DIY interactive Multi-touch display project that you can learn to make also. I like this multi-touch project as the display is actually not LCD but a projected screen on a whiteboard.
This rules as I think projected LCDs are slightly more safer for child use, spills, and whatnot.
Between the Apple iPhone and Microsoft’s interactive table, multi-touch displays are all the rage. This instructable will show you how to turn your lcd projector into an interactive multi-touch display table using a few cheap components readily available from the hardware store.