Do you have at least 1/2 yard of each of your fabrics? The first thing I can suggest is to make sure that your fabric is organized by color. Then here's what I'd do. If I had a specific pattern in mind, I'd take the pattern and go into my stash and pretend I was at the quilt store. 'Audition' different fabrics together, put them in a stack and go away for awhile and do something else. Then come back to it and see if you still love it. If you have a lot of scraps, Quiltville.com has free patterns, and the quilting magazines usually have one pattern to make using just your stash.
Good luck!