I have in my collection an Oric Atmos system, which was used for 40 years as the database and logging system for a motorbike club, member records, logs of fuel from the club tanks, leave/arrival times, and so on ..

It was finally retired and replaced with an Android app - but I have it preserved in my archives, disks and all (minus the data), for display some day .. with demo data, though, still an awesome little system, chugging away ..