Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:762738.
I needed a double mount as we are adding Mac Minis to an existing computer lab. I used jbolonski's Mac Mini Monitor Bracket (http://www.thingiverse.com/thing:343588) to start, and added slots for the Intel NUC to slide into place.
After a couple prototypes, this is it :)
I recommend printing the top brackets as is. It takes a little while longer, but the sloped edges come out looking much cleaner this way.
The bottom bracket should be printed on it's side.