Flax seed neck roll, can go in the freezer or microwave. I have different oils that can be put in them: Rosemary, eucalyptus, peppermint, lavender. There are different fabrics laid next to the pillow in the picture.
Flax seed for sale. Used for microwave heating pads etc. I bought more than I needed. I have around 10 lbs left. $.50 per pound. Paid $1/lb originally.