This is so fun, I just finished cutting up enough PVC for 10 'guns' for my daughters 11 th bay party. I plan to send the kids through our small park retrieving parts from strategically placed brown paper bags with clues & directions, and then making them work together to put together & assemble. I found food coloring spray to color the marshmallows for fun ( lavender & orange) and at the end when they are built, they can have a "war"! Then onto to cake & ice cream! I will let you know how it goes making the pieces found in a hunt... I think it will keep them busier the just building them .