Spearmint (Mentha spicata) has a minty, slightly fruity scent, softer than peppermint.
DIY air freshener: put 3-5 drops of essential oil onto 3-4 cotton balls and place them in a tiny bowl. You can place the bowls all around the house (perhaps behind the toilet or on the window sills) for a fresh-smelling home.
Put 3 drops of essential oil onto a cotton ball and clip it to the vent on your air conditioner to keep the room smelling fresh.
DIY car freshener: select what shape you’d like, and cut out two pieces of felt and one piece of cardboard, and glue the felt to both sides of the cardboard. Put 3-6 drops of essential oil on each side, and refresh when needed.