I once brought in ~20 "Koosh" balls[0] (soft fluffy plastic balls) and gave everyone a few. We started off having skirmishes every few hours, until it got borin

I once brought in ~20 "Koosh" balls[0] (soft fluffy plastic balls) and gave everyone a few. We started off having skirmishes every few hours, until it got boring after a couple weeks. We then resorted to just throwing them at each other when deep in work, laughing when people screamed because they weren't expecting to be hit in the head. It really was a joyous time.. and magically we didn't destroy any monitors even though there was a minimum 50% chance it would hit the screen instead of your intended target. 6 months later and the balls are just sitting in the same place they were last put down, except for the random passer-by who asks what they are used for... upon which we are motivated to take up arms one more time, albeit while we are all sitting at our desks. The next attempt was a few "airzooka" air canons[1]. Same result as above more or less, except our operation got shut down much earlier, as everyone else at the office complained that they were too loud (they really are much too loud). [0]: https://en.wikipedia.org/wiki/Koosh_ball https://en.wikipedia.org/wiki/Koosh_ball [1]: http://www.thinkgeek.com/product/60b6 http://www.thinkgeek.com/product/60b6