Anybody saw Perifractics fully functional Lego C64 housing? There are some Youtube Videos about it on his channel and it´s on Lego Ideas now also.
He build a Lego keyboard for it with keys that can be pressed and you can fit your C64 internals into it also. In that case you can use it with your original C64 Keyboard or even replace the Keycaps on that with Lego Bricks. Awesome and hilarious at the same time 
Here is a small overview Video with links to the complete build videos in the description of it:
I don´t know why, but I had to watch the complete build videos.
My first thought was, he talks a little bit like he´s the Bob Ross of retro electronics. 