There is never a time that I don't have at LEAST a stack of cards with me, and a handful go into each order's box. I also slip them into places publicly- leave them in geocaches, pull up ButterWinks on facebook on all the laptops in Best Buy and leave a card on the keyboard, with my tip at the end of the meal. Plus When I'm buying an entire cart full of powdered sugar, butter, and flour... people are BOUND to ask what I'm up to! haha.