Today I stacked a coin tower of quarters.
To start the tower, I put three quarters on the counter so that they formed a triangle, then I put a second layer of coins on top (corkscrewing them a little bit). After that, I kept adding layers of coins; each layer was offset a little bit from the one below it. As the tower got higher, it started to lean to the side; I had to stop and straighten it out a couple of times. I was going for a spiral effect, but it didn't quite come together that way.
I repeated the process with all the quarters that were available. The final tower was 36 rows high, and used 108 quarters ($27.00)
Here's my creation:
When I was done I put all the money back in the box. As I was putting the box away, it occurred to me that if there's that many quarters it might be time to cash them in!