Perhaps you have some old sheets or blankets laying around, or perhaps a local used clothing store where they can pick up some satin or silk for a Couple dollars.
Sewing machines a really Great Tool, I was fortunate and had a mother that used one and got to watch , many closets harbor these, or perhaps there’s a table you’ve been building on for years and there’s a sewing machine under it.
Some careful planning and a couple socks can be cut out in no time.
Double up the material, leave margin for a hem, and consider the thickness of the panel.
Your sewing gets done inside out , then you flip the seam side under.
Socks work great for packing, storage at home or transporting to the field.