Hello and welcome.
Lovely to see your bags, and they are wonderful.
Like you, I recycle all material that I use for quilts, and bags. I spend a lot of time searching charity shops for fabric, whether off cuts, curtains, sheets, old table linen and so on. It is great fun for me. I cannot afford to buy new material either - far too expensive. If family members ask me what I would like as a gift - I always say fabric!! That is the only time I get new fabric!
Welcome again and I hope you find lots of new ideas here.