The economy is tough, so what can be done to reward employees that doesn't cost much money? Company picnics or other group activity? Nope. Flexible work times and leaving early on Fridays were the big winners.
We respond to different rewards. Office Team studied the "forms of recognition valued most by administrative professionals, as ranked by managers and support staff". There's a disconnect. It reminds me of Steve McConnell's section in Rapid Development about the disconnect in what software engineers find rewarding compared to what their managers find rewarding.
How about taking your officemates out to "the thinking man's game", baseball. Whoops, only 26 of major league players and managers have college degrees. Not 26 percent, 26 total. The brainiest team is the Oakland A's.