What could be more fun than an afternoon spent with friends turning PCV pipe into super-high-tech-launch'm-across-the-yard marshmallow guns?????? This idea came from the instructables site (http://www.instructables.com/id/Marshmallow-Shooter/) and kept the boys busy for ever. After lots of elbow grease cutting the pipes to length, they could pull them apart again and again to make different models, try for a better launch, more speed, one handle or two....you get the picture. Definitely a worth while investment of $4. And, of course, anything that provides a reason to bring a bag of little colored marshmallows into the house is good in my books!