You can't quit. You are hooked..
You have more than enough stuff to work with. You didn't mention thread, and needles. Joann's has that on sale all the time, or use a coupon. I don't use patterns, but I'm sure there are free ones all over, and the library has books..
Yes, there are plenty of board members that will help out with fabric. If they can't give you yardage, there are plenty that don't like making scrap quilts, and will be glad to send you their left overs. I was fortune enough to mention the need for scraps, and got a bunch of offers. There are also scrap swaps, and if you are really ambicious, you can join the 1.5" stamp swap. mariposa is running a swap for 1.5" squares. I have bought flannel sheets, and shirts at thrift stores. I love getting fabric from there. Mens xl, and bigger have a lot of fabric. I've bought jeans there, and made jean quilts.
Where there is a will, there is a way. Let you imagination go wild, and be creative.