Dana "Nanoraptor" Sibera designed a tower C64. In an ideal world, that's how a PC-cased C64 would look, complete with its keyboard:

https://bsky.app/profile/nanoraptor.danamania.com/post/3k47g...

Better still... someone built it for real:

https://www.reddit.com/r/retrobattlestations/comments/1iqth0...