I received a 300-set of Nevada Jacks. I began to shuffle them to get them "worn in". It took about four hours to complete, because as I shuffled them in groups of 10, I began to build.
The completed work can be found here:
http://www.crankyweasel.com/?page_id=182 I didn't make any special effort to keep everything perfectly aligned, so don't be surprised.
I took the pictures, and then turned around to pack up the camera. Then I heard a loud crash, and a ball of terrified fur ran past me.
As I picked up the chips, I reflected on a lesson learned: when stacking your chips, put your pet elsewhere.