Exercise - fetch something from the kitchen. This happens all the time at home and drives me crazy. "Get me the dentist's papers, they're in the drawer." What drawer, in what room, what do the papers look like, are they in some sort of container... Reproducing this in a residential training setting opens up interesting possibilities. For instance, while giving attendees a tour or taking them from place to place tell them (separately) to pay attention to a specific item ("this is your target for the exercise after lunch") in a non-central location. The next day, pair people up, have them describe the target to each other, fetch targets, debrief.