The PDPii is a project to bring the PDP-11 back to life in the form of an Open Source motherboard with a Mini-ITX motherboard ... is gathering up a few PDP-11 compatible Russian КР1801ВМ2 ...
however the smaller chassis has been redesigned specifically for mini-ITX motherboards. Its 16 shock-proof rubber stands and glass panels mounting inside the frame mean it can be sat on any side.