I don't do much in the way of drying fragrant plants/leaves but I do have one Lavender plant that I've dried and I love the fragrance! I don't know if the company still exists but years ago I used to buy all kinds of dried flowers, herbs, spices etc. in bulk from the San Francisco Herb Company. I'd mix up batches of different scents and put them in decorative jars and containers. I also made little scented sachets using tightly woven lace or nylon netting. The sachets make great little gifts themselves and I also used the sachets for package ties on Birthday and Christmas packages.
Check your local fabric store for remnants; tightly woven lace is best to keep the potpourri from falling through. cut into small squares or rectangles. Sew or use fabric glue, adhering 3 reverse sides together and leaving one end open. Turn right side out and using a teaspoon, place rosemary or other mixture of potpourri inside the little bag. Tie the end tightly with a thin ribbon; tie a bow and voila ... pretty scented sachets!