If anyone is marketing them I'd love to hear if you are having any success with them and if so, what size you are making them. I see several sites advertising them but there is no way to know if they are turning any out or not just because they have them listed.
I don't market them but I BUY them. My favorite is a small one about 5 or 6" diameter circle with some embroidered purple felt as a casing. I have it near my face on top of my regular pillow so I can smell it.
If you don't mind my asking, does it have an opening so that you can refresh the contents or is it sealed all the way around? I see some people suggest placing velcro at some point so that the purchaser can refresh the herbs and some sell them as a one time completed pillow.