I had a hard time finding this in stores and didn't have time to run to a craft store that I figured would have it, so I bought it as an add-on item on Amazon. I can't even remember what my original intent was in buying it, but I've found it quite handy for various small tasks around the house since I had some left over (e.g., gluing magnet bars to the bottom of my new shower curtain to weigh it down and help it snap/stick to the "lip" on the bottom of the shower floor, which just happens to be the right kind of metallic). The only downside I've found is that after repeated use, the tip of the bottle can get clogged with glue, but I've found that inserting a toothpick (or similar small disposable object) will work to clear it and make the bottle usable again.