Ok, I really don't have an obsessive-compulsive disorder, but I do like to have things grouped, organized and labeled. A Methods and Standards department was under engineering for a few years so their devotion to LEAN manufacturing, particularly 5S really rubbed off on me.
If I have a few of the same kind of blanks I put 5 blanks in a 5x8 inch plastic zipper bag and apply a small printed label (Avery 8167, 1/2 inch by 1-3/4 inches) on the bag with the name of the wood and where I got it from. For single blanks I use either a Sharpie to mark the wood or if the wood is dark I use a return address label with the name written on it.
OK, maybe I do have OCD, but it's a mild case!
Dave