Hi, Steve.
Maybe you could stack or bundle the fabric together or get a basket or (clear) box to store it in, then make a sketch of the basic concept for each project in mind. Don't forget to add notes about how you want to do specifics. Make sure you can see it and have easy access.
OR you could store all your fabric together (like in one of the big plastic boxes I used to use) and use a small swatch (WHAT? CUT IT?!) of each on the sketch pages/notebook? This way you could have all your fabric together and still have what you want to make a certain project together.