Add fragrance oil or essential oil to aroma beads and they absorb it, you can even add a drop of oil based dye (liquid candle dye) to colour them. When the fragrance oils are absorbed they hold the scent for ages!
You can use them for a variety of home fragrancing products .. fill an organza bag with the beads for drawer scenters, stuff cushions for scented room/wardrobe hangers, use in pot pourri .. really you can let your imagination run away with these beads.