I think puzzles like in Toomraider would be more appropriate. Maybe somebody finds something unusual somewhere, and then somebody else finds something else, which is related to the first item. Then you know that you need other items or activities to complete the puzzle, so everybody can go and look for them or participate in the activities. The puzzles we've had so far have been too complicated for the average guy, who can only sit back and wait to see what the selected few can do.