I have a good example - Piotr Grzesik's prototype of 486 SBC recently covered on Hackaday https://hackaday.com/2026/01/08/m8sbc-86-is-an-fpga-based-ki... and HN https://news.ycombinator.com/item?id=46578601

https://imgur.com/gallery/486-homebrew-computer-lsUiWdw#dIBt...

Looks like something that shouldnt work at all :)