The Raspberry Pi Zero just came out last week, and people are already creating 3D printed objects for it. Most notably, the infamous case that protects the computer.
A nice Raspberry Pi Zero Case was posted on Thingiverse. The cover comes off and there are four pegs to hold the board in place. A fast 3D print in PLA on a LulzBot Mini yielded a case where the pins were too big, the holes were too small, and the lid was very difficult to snap on. Still, I get a nice feeling handling the Pi Zero in such a small case. GPIO pins are exposed along with the inputs for power, mini HDMI, USB, and microSD. Notice that the area for the micro SD card is much larger to make it easier to pull the card out with your fingers.
Another print is on the way with higher quality, and HIPS may be in store if there are still a few problems.