The baseball bat is for "Attitude adjustment", apparently :)

![](http://cdn.arstechnica.net/wp-content/uploads/2013/06/topo-adco.jpg)

Source: [Arstechnica photos of ISS control room][1]

(ADCO=Attitude Determination and Control officer)


Here's a better pic of the bat from the Twitter:
[![enter image description here][2]][2]


  [1]: http://arstechnica.com/science/2013/07/how-nasa-steers-the-international-space-station-around-space-junk/
  [2]: http://i.stack.imgur.com/Dmbxo.png