I've recently finished designing Etsy's second native app, Sell on Etsy, which launched in six countries. Building on top of that foundation – dongle deployed! – my team and I just launched a card reader for both Android and iOS devices that helps sellers make in-person cash and credit card sales. Unlike a Square reader, it is powerfully integrated with an Etsy seller's shop inventory. Fred Wilson writes about it here.
My mornings are spent jogging to work while wearing a nerdsack. I usually follow this up with an hour of extracurricular iOS programming.