One-Use Straw Containers: I. clamp near end of straw with needle nose pliers and apply flame. (let seal cool before releasing) II. put in whatever and seal other end. -- Straws come in various diameters. Seal HONEY, machine oil, tiny screws, threaded needles, small batteries, glue, purifier tabs/powder, creams, toothpaste, liquids, flavors, etc.