While unpacking from vacation, my dad noticed the handle on his suitcase was broken. In 30 minutes, I modeled and 3D printed the first prototype (the white piece in the middle image) of the original part (the gray one to the right). We tested it, and I adjusted the model. We printed v2, tested it, and I printed the final part in grey, seen at the bottom of the right image. Because of 3D printing, Dad's suitcase is now good as new.