Has anyone ever changed the fill in their wiebad tater tot/fortune cookie bag. Was looking for a zipper but none only certain bags. If you changed the fill did you find a sweet lady to stitch it back up tight. Could you instal a zipper with a velcro flap for extra protection. I like the ability to change fill. I know with sand or fine fill this may be an issue but sand stays in the plastic bag in the shed. Ty for any input.