|See my card? It's in the W's and has the edge marked|
with a dot-dash-dot pattern in blue ink
To help me pick out my card swiftly, I marked the edge of the card with an uncommon pattern. I used DOT-DASH-DOT, which is Morse Code for "R", the first letter in my first name. Now picking my card out of the stack takes almost to time at all; in fact, you can probably spot in the this photo.
OK, I'll admit that this is not a world-shattering discovery, but if you use this system it may save you a bit of time. But please, if your last name begins with W, don't use Morse Code for R - save that for me!