Scented floating candles

 
Floating candles tend to be unscented, because they're often used at the dinner table and no one wants fragrance competing with food flavors and aroma.

However, if food is not involved, there is also a wide range of scented floating candles to choose from.

Floating candles don't have to be formal; you can find a wide variety of shapes, ranging from a wide variety of flowers in varying colors (and fragrances), bugs, insects, leaves and butterflies, to animals and novelty items like ghosts and cartoon shapes and characters.

Floating candles can also work outdoors. I've even seen them used to great effect on a sheltered fishpond (although I'm not sure what the fish thought about the whole idea!). Some designs have recessed wicks to shelter the flame from unkind winds.

There are a couple of obvious safeguards. Make sure the container hold the candle is watertight, and make sure it's not inflammable.