We always loan teams a digital camera so they can take shots of themselves having fun on a team building activity. The photos are then sent on and they make a really good memento of an enjoyable day away from work.
Teams often find fun props to use when they’re staging a shot. In the picture they saw a parked steamroller and couldn’t resist larking around with it. Here is a full list of team building activities, some of which make better photo opportunities than others.