After playing with a C64 Maxi replica (mine has the VIC-20 colors) I can't think of using a vintage computer without a matching keyboard (and often mouse). The experience is not only the pixels on the screen and the sounds of the speaker, but the whole spatial relationship with the physical object.<p>It probably doesn't need to be an almost perfect replica like the 64 Maxi, but having the keys in the same places (even if there is no ESC key - looking at you, DEC LK-201). On my desk, my two daily drivers are a Sun Type 7c (Type 7 is in storage, waiting for its rotation) and an IBM/Lexmark/Unicomp PC-122 Model M, and I can say each of them provides a unique experience, tactile, spatial, and, on the Model M's case, auditory.<p>I'm thinking about learning how to build keyboards and make a couple DIY ones. Switches can't be the same, but, at least, physical layout, keycap shapes, labels, and colors can be matched.