I've made an amazing office discovery! The ubiquitous Koosh ball, long masquerading as an office stress toy is truly an 'office appropriate noise level' musical instrument! Seriously, you can even play a Koosh ball in a cube farm without irritating any but the closest and most sensitive of neighbors.
Here's what to do:
Insert headphones from music source of your choice into your ears. My research suggests that 80s tunes work best. I had some fantastic results with both "Come on Eileen" and "The Fanatic". Jazz is tough due to the sometimes erratic time signatures. Goold old head banger/metal is best for serious stress relief - say a little Skid Row, or maybe some Foo Fighters, but beware of wrist injuries! Creed is never OK. Never.
Ok, now that we have that out of the way, let's move on to mechanics.
Form:
Next, pick up your Koosh with whatever hand you aren't mousing with. This works either if you hold the Koosh so that your fingers are spread with small sections of Koosh tentacles between each finger (shown here from the top):

or in the classic small grip where you hold a small group of Koosh tentacles with your thumb and index finger.

If you plan to get really agressive with the beats, you may want to try gripping nearly half of the Koosh with your hand so you can shake the head around like Animal.

Your goal is for the Koosh to look like Afro Ken!

Movement:
Raise your hand (with arm/elbow forming a right angle to the body) so that the Koosh is at ear level, and shake it to the beat!

Get wild - experiemnt with shaking with more or less force based on the kind of sound you're going for. Try some extra cool above the head shaking, try some beating on the desk/shaking combos - you can even beat the Koosh against your other hand to get the true tamboirine experience (it really helps if you close your eyes for this one).
Feeling ROCK STAR awesome? Try a toss/catch/shake combo or try to switch shaking hands without losing the beat!
Rock on, my friends. Rock on.
Posted By: Chris Lukasik