Sat in a cyber cafe. I had half an hour ' time pass'. I , for a change, entered profession related key word, ' post lunch energizers in Training'. Number of interesting ( and very useful) results and web sites popped up !
Here is the Google search result. For ' post lunch energizers in Training'.
http://www.google.co.in/search?client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&channel=s&hl=en&source=hp&q=Post+lunch+energizers+in+Training&meta=&btnG=Google+Search
Here is a very useful web site for ice breaker.
http://www.wordjuxtapoz.com/icebreakers.html
Here is one more, from an experiential learning web site. post lunch energizers
http://www.experiential-learning-games.com/energizers.html
All this , apart from key word searching ' business balls'. Do that too, apart from reading from these web sites and picking up the most relevant ones, in leisure.