Every day I hear from my friends, telling me that I never creating anything practical on my 3D printer. When I got to thinking about it, they are right. I just made cool little Doo Dads, and never anything useful. My friends use this as a reason why they don't own 3d printers, but I told them that there are so many practical uses out there, and more will come in the future. Unfortunately I couldn't think of any of these uses (at least not many) off the top of my head, when they challenged me on it. So, what practical items have you used your 3d printer to create?