Magnetic Key ring and belt clip
thingiverse
I found this key ring http://www.thingiverse.com/thing:245764 very useful for some time, but wanted to free my pockets. So I designed one specifically for my work keys and made a magnetic belt clip for it. One side is sized for regular door keys and the other fits cabinets keys. Rectangular recess is meant to add a small ID and useful to check orientation when clipping it in. It looks a bit chubby, but is small enough so its not in the way even when sitting. Make a nice schlack! sound when the magnets mate. It uses 4 8x3 mm neodymium magnets and 3 screws and nuts (sorry I don't know exact sizes, they're printer leftovers)
With this file you will be able to print Magnetic Key ring and belt clip with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Magnetic Key ring and belt clip.