Applestar talking about the doorsill sock reminded me of another one: rice based heating/cooling pads:
Make a fabric tube, then fill it with a mixture of rice and the rosemary and sew it up tight. For cooling chill it in freezer, for heat microwave it for a few minutes.
It holds the heat really nicely, so with a few minutes of microwave, it will stay warm for a long time. With the warmth and the scent, it is incredibly soothing on your shoulders or where ever. The rosemary should make it very nice against headaches.
I have made them for Christmas presents and they are wonderful.