Iceblossom

I was going to suggest trying dying some yourself. I spent a few years quite a number of years ago doing a lot of natural dying, from coffee and tea to various plants, beets, onions, and oak leaves and ferns and all sorts of things. I haven't planted anything here yet but I do plan to have Indigo in my flower borders.

Just before Covid, I signed up for a Ricky Timms seminar but sadly that didn't happen

A lot of dying nowadays seems to be done with rayon, if it can pass a burn test to where I just can't tell if it is cotton or not, I go ahead and include it in my quilting. I've had known pieces of rayon in scrap quilts and they lasted as well and sometime better than the cottons.

Walmart of all places has quite a bit of dying materials, don't look so much with sewing notions, but nearby with crafts and tie-dye kits.

You do want a dedicated pan, I used a big aluminum canner type thing I got from the thrift store a few dents weren't an issue, and by the time I was done with the heat treating, there was definitely a coating/residue I would not want on food dishes. I did less in the microwave, my big pyrex (heat safe) bowl (4 quarts) worked very well with no staining or residue. Be sure to cover with plastic wrap!