Dad threw out my RISC-PC during a clean-up of the basement a couple of years ago :-(
I had spent almost all the money that I received during my year of mandatory service at the German Armed Forces on it and a 17" CRT from Iiyama (which was pretty high-end at the time).
I upgraded it to the StrongARM CPU daugherboard when it became available (even pre-paid for it and received a reservation-number - Acorn was ahead of the curve there, too: they preempted Kickstarter by a decade..). It had SCSI-disks, SCSI-CDROM...
I loved the integrated vector graphics program ("Draw", IIRC), as well as TechWriter.
And the ChangeFSI picture-format conversion utility...
RISC-OS taught me many important concepts of computing - and it truly was a joy to use.