First tip is baby wipes. You can wash out baby wipes to use for castor oil packs or poultices. Wash well, but gently, rinse VERY well and hang to dry. You can even buy dry baby wipes but I'd wash them anyway.
A good castor oil trick would be to wash and dry, put them back in the dispenser, pour castor oil over them and let them soak it up. Not to dripping consistency bur just to oiled capacity. Then you'd have castor oil packs handy all the time!
And you can buy a single yard of PUL fabric - as used to make diapers - and make either waterproof bandages or even sleeves (if you get the stretchy kind) or belly binders that you could simply pull on over a pack.
Also, I would hope those who research and explore natural medicine, have been saved money, or relieved of pain or saved from disability - or who have even saved their own life - would donate to this website to help keep it up and its caretakers safe.