I use this system for glue on the HS level. This way kids don't waste so much. I found that they try to open the squeeze bottles with the point of a scissors, or stuff a good drawing pencil in it or cut it off so way too much comes out at a time. I let them fill their own canisters when empty from a gallon glue jug with 2 holes drilled into the cover. This is like a giant squeeze bottle. Has worked really well so far---------- after 28 years I finally found a
system that works. Heheheheeh.
We use matt board scrap to spread---free. YIppieeeeeee!