I have a stash - and it's sizable - including bolts of smooshy fabrics to use for backgrounds and/or backing - because when I want to start a new project I want to do it NOW, not have to go shopping specifically for that project. So I have a shelf of neutrals, one of yellows, another of oranges, and on through the color wheel. Of course, if I know I'm going to Lancaster, where the best fabric tends to be more affordable, I will take a favorite pattern or book with me, just in case I see the perfect fabric to inspire!