What's a good team building exercise for an off-site manager meeting?

This is a 9-person group, diverse in gender, age, management level, and company experience. The off-site meeting is primarily for strategic planning.

Try an outdoor experience. Divide your group into 3 teams and assign each team an area in which to build a shelter. Seaside and lake front locations are great. But rivers and woods are good, too. The groups should be within shouting distance of each another. Give them 3 daylight hours to complete their task. (This is team building, not survival training.) Give each team one tool that others do not have; for example, a knife, a small shovel, a rope, a first aid kit. You, as facilitator, will be in regular touch with the groups to monitor process. When time is up, gather all together for debrief with questions such as: What was it like? What did you learn? What implications for the office?

Culinary Team Building events are a lot of fun and help bring folks together who would not otherwise affiliate in a social environment. I've participated in one of these events at a manager's home. I will be participating in another soon at a culinary supply store in Houston (Sur la Table). The group breaks up into teams and gets an assignment to prepare a part of the meal. In my recent experience we had teams for the salad, ravioli, and sauce. All parts of the meal are made from scratch (including the Caesar salad dressing) under the direction of a master chef. The best part is the eating. There are many providers of Culinary Team Building events on the internet. Enjoy!