Shampoo Bottles Into Monster Pencil Holders use magnetic sheets as mouth background to hold paper clips! Or cut one of those credit card magnets or giant calendar magnets you get in junk mail into the black mouth shape. Hot glue the printed side to the bottle so magnet faces out. Paper clips can stick to the outside! Or glue strong magnet inside. It should be strong enough to hold clips on the outside.
Glass Bottle Cutting- soak a piece of yarn in nail polish remover, tie around bottle, light with a lighter, let burn all the way around for about 10-15 seconds then dip in bowl of cold water perfect split every time.