I am having trouble finding sachet bags that meet the following requirements: 1. Organic, unbleached cotton. 2. Small size 3x5" or 4x6". They will contain herbs for use in aromatherapy. They need to be thick enough to contain small, dried parts, but thin enough to let the scent out. I have a great bag already with fir needles and need to find more like it so I can make my own. 3. Drawstring closure. Please help! If you make your own sachets from organic herbs and know of a good supplier whose empty sachet bags are organic cotton, please answer. Search engines are doing me no good, no matter how I ask. Thanks!