Whitney Sews has some good tips on using thrifted items as craft and sewing supplies.
I haven’t been shopping at a craft or fabric store for years, except to restock on paints for art journaling. When I’m at a garage sale or thrift shop, I’m also scoping out the inventory for things that can be made into something else. Sheets, especially flannel ones, have been a favorite thing to pick up for lately. I’ve been using them as a backing for afghans and quilts. Like this:
I’m still stockpiling t-shirts,too for a big project… an area rug for my daughter’s room. I’ve experimented with smaller rugs trying to decide if I want to knit,braid or sew.