R.Aspx Ben Bustard, 17, of Bucksport dismantles his Marshmallow Shooters booth Tuesday at the Bangor State Fair after he was informed that the cost of $1 million of liability insurance was more than he initially budgeted for. Bustard was selling Marshmallow Shooters, a type of blowgun made from PVC pipe that shoots small marshmallows, similar to the way a cork flies out of the end of a popgun. We have the HOW TO in MAKE volume 02. Link.