Spotted this in a YouTube video about the PDP-11. It's amazingly cute and an impressive piece of kit. There are no kits available at the moment but you can add your e-mail to a wait list here. There is also a blog post about the author creating the thing here. And this is the YouTube video where I saw it.

I don't know anything about this era of computers, but the simple interface with its switches and array of blinkenlights is somehow both ominous and attractive.