It took a little longer than I hoped, but I have added direct links to the challenges from this blog to the sidebar, over there ---> to the right (under the purple bar of way cool photos). You'll see ten challenges; most of these are building challenges, though there is one improv challenge and one physical challenge in the mix.
Remember, if you try these with your group, snap a photo and send it in so that I can post it for all to see. Anyone who sends in a photo will receive a free copy of my e-book, Ten Minute Tasks (with 63 more great team building activities!). Not a bad deal, eh?