I've just made my first working part from my Reprap, it was an internal hard disk mount for my desktop PC.
My CM case came with 4 sets of HDD mount and I needed one pair extra. With my fairly strong 3D skills, I managed to model it up quickly and got it to print in couple of hours. Although the printed part was about 0.5mm too large which I had to sand down the side, but after that it was working amazingly.
I was staring at the original and copied part, and was thinking.. since 3D scanner is already open sourced, I'm tempted to DIY an all-in-one 3D scanner/ photocopier/ printer...is there such thing out there on the market already?