As I mentioned in a separate email, PDX Makers/PDX Maker Week will have a booth at the Portland Mini Maker Faire. From that message:
"Apart from individual Maker projects, we would like to have an ongoing interactive project at the booth during the Faire. AND, we’re looking for Makers to collaborate on designing and creating this. I have 105 ping-pong balls—maybe these can play a part. :) Of course, we only have a couple of weeks, which will go fast. But, sometimes, great pressure leads to great innovation."
Anyway, this is a brainstorming/planning session. I'll bring the ping-pong balls.