Interesting post — and I have a new thing to add to my list, Pmod modules.
The BlackIce board has female sockets that support Digilent Pmod modules, so adding VGA display and PS/2 keyboard sockets was as easy as buying a couple of cheap modules and plugging in.
via Ghost in the machine: a BBC Micro on an FPGA – Machina Speculatrix
Flying Upside Down 