Cut orange/lemon/grapefruit in half, eat the middle, leave center core-like stem intact. Pour veg oil, olive oil etc into orange just below top of the stem. Light stem, it will burn for hours and smell amazing.
All natural, eco-friendly, sensationally smelling candle! Separate the orange peel from the Orange Pour olive oil into the orange peel half until it is full. Light the middle piece of the orange peel and ta-da! A candle for every orange you eat!