This works best for similar scents, like fresh linen and beachy scents or fruity candles, but you can always experiment with ones you think will go well together.
You can turn your leftover wax that the candle wick won’t reach into new wax melts to savor your favorite scents for a little longer.
Tie a knot on the top and you have a DIY air freshener that you can hang in a closet or place under a car seat for a fresh scent.