The Raspberry Pi lacks mounting holes, so it's a little harder to mount free standing so I came up with some PCB clips and a reference mount for them for the Raspberry Pi, but they could be used on all kinds of PCB mounts.
Additonally, on this mout the pinout of the GPIO header is etched on the mount to act as a quick reference while prototyping!
The PCB clips are made laser cut out of 1/8" Delrin and the mount itself if 3mm acrylic. Red lines in the EPS are vector etch lines, black are vector cut lines.
Video of assembly here:
More stuff about the clips on my blog here:
Grab a kit here: