OK, it's not extreme. But when you've learned to light a fire using traditional methods, can forage for free food, and build a pretty nifty shelter - the next time your on a country walk you will elevate yourself to 'Super Dad' or Amazing Auntie' status.
Of course, with team activities competition is often key. So team challenges like 'The first boil a kettle of water' (ie. find water, collect wood, start a fire etc etc...) are big hits.
So, with summer on it's way (in theory!) clients are always keen to break away from the conference rooms and get outside. Look at what is on your doorstep. And channel your inner 'Bear'!!