Ikea's new Friskhet series includes a number of scented candles plus these air freshener dohickies: "You decide how much scent you want the scent container to emit by how much you open its holes. The scent will last longer if you close the holes completely when you are not using the scent container." Available in Lilac (the color, not the scent: "Gives off a refreshing scent of grass, vanilla and sandalwood") or Gray ("Gives off a refreshing scent of sandalwood, cedar and vanilla"), $1.99 each.