Many years (a decade?) ago a LEGO computer case did the rounds of the internet[1]. Sadly I can’t find any pictures of it, but I can assure you that Jim Devona’s (anoved) LEGO Rasberry pi case is at least 100 times smaller. And if you want one yourself, Jim has kindly put up instructions for it.
[1] There have been many since, but this particular one was the first I was aware of that found widespread fame on the internet. It was not pretty :)