Olive oil is a great multi use item.
Use it for flavour and to boost calories intake (you can add some to a hot chocolate before bed time) but also as a lubricant (stuck zips/squeaky stays as well as on skin/lips/nails)
Add some to a piece of cotton/cotton ball and you have a fire starter, make a wick and with the bottom of a soda can yu have an oil lamp...
Franco