One of my favorite things about a physical products business is Prototype Day. That day when after months (or sometimes years) of brainstorming, designing, emailing, meeting, outlaying funds, designing some more, spending some more - it happens, you finally get your first prototype! The main reason I love this day so much is that when a prototype arrives it's the first indication that this crazy idea that only existed in the mind might actually become a physical reality. It u