As a leader, what are some innovative ways YOU'VE used to show Esprit de Corps??

With heavy deployment rotations, stagnant promotions and overall lack of motivation I see a steady decline on "Joe's" morale. I try my best to "mix it up" and keep them engaged with a constant stream of positive reienforcement. Here's a pic of my Platoon while deployed to Afghanistan. Our Company name is the Phantoms. So around halloween I ordered a few of these masks and we wore them while performing our duties on the flight line. (with my Commanders blessing of course) It was just the boost my joes needed to make it over that 8-9 month milestone on the backside of a year rotation. Tell me your cleaver ways to improve morale in your unit.