Recycling is the latest craze in the world so I decided to do my part by recycling cans and bottles.I hung a 30 gallon trash bag on a hook and started to fill it up, after a little while the weight of the cans was making the hole a little difficult to open so I came up with the idea of using a 3"x 6" diameter piece of pvc pipe with 4 plastic hooks riveted to the pvc to keep the mouth of the bag open.I later decided to use plastic stickon hooks witch made it much cheaper. I have no idea how much it would cost to manufacture but I AM sure it would be really cheap using the latest molding and printer methods. I AM db.