First comes love, then comes marriage, then comes a set of in-laws to shop for. Dads are notoriously difficult to shop for, and now with a father-in-law, you have two dads on your shopping list. Not to mention, there are many times when you need a present for your father-in-law (from Christmas to his birthday). While it's easy to find cliche gifts for dads, we're guessing that your father-in-law is not your average bear. Here's how to navigate the shopping process so he feels treated extra special.