The tips below are from the Grandparent site.
Unless you’re swimming the English Channel, we don’t recommend slathering your body with petroleum jelly. As the name implies, it’s a by-product of oil refining, so a little dab will do you! That said, it’s been in use since 1870, and high-quality brands (like Vaseline, for example) are generally recognized as safe.
Keep car doors from freezing shut: We got this tip from an Air Force mechanic: Put a thin layer of petroleum jelly around the insulation of your car door, and you won’t have to worry about your car doors freezing shut when the next polar vortex hits.
Make an at-home mani/pedi look perfect: Use a cotton swab to outline your nails and nail polish won’t stick to your skin. Also, a thin layer of jelly around the tops of your nail polish bottles will keep them opening easily.
Keep ants out of the doggy bowl: Coat the outside of Fido or Fluffy’s food dish with a thin layer of jelly and ants will dine elsewhere.
For more uses visit 57 Uses for Petroleum Jelly