Booted up an old MacBook Air from 2014 using an external drive bay for the SSD chip, because that part of the mainboard had died. It still has bitcoin-qt, dogecoin-qt and namecoin-qt installed. And I found a glorious 2 NMC on there. 😂
Discussion
Next up: find out which .bit domains I had registered using those keys, while rescuing some old photos to the NAS.