Dear Amy,
Tradition would have me give you a gift of cotton on our second wedding anniversary. Well, my jeans are made of denim, whose source material is 100% cotton. You are welcome to take them as often as you wish. Preferably while I'm wearing them. Rip them off, I don't care. And, should you eschew your hands for your teeth in the removal of that garment, in no way will I hinder you. Indeed, I will shout encouragement from the rooftops to spur on your effort. (What we're doing on the rooftop with my jeans in your teeth is a matter I'd like to discuss in some detail. In private.)
A more modern tradition, or so says the internet after a brief search, is to bequeath a gift of china on the second anniversary. I've been to China. A very neat place to visit. Hard to find a fork. Lots of people. Big wall. You and I have a toddler boy-child, two dogs and a domestic penchant for borderline cleanliness. China would get boxed up and packed along with those of our wedding gifts that won't get used until the kids move out.
Plus, we're broke.
So you get a letter. Lucky you!