I designed this to hold my Raspberry Pi and breadboard during prototyping. I use a breadboard from busboard, which is great to work with. [https://geni.us/JXkgr4](https://geni.us/JXkgr4)

It works with both the standard size Pis and the zero size. 

There are also holes for M2 nuts to mount the Pi to the plate. But it also works without them and 2.5mm screws.