Do you sometimes lose the small caps to your glue bottles? Try attaching them to the bottle with a short length of fishing line.

Drill a hole in the top of the cap and run one end of the fishing line through the hole. Tie this end in a knot. Tie the other end of the fishing line around the neck of the bottle with a square knot and you'll never lose the cap again.
—Edward White, Torrance, Calif.