You got any CP/M computers? I keep one in the closet just in case. I think my father’s Commodore with cassette tape drive got trashed a few decades ago, however.
Pre-IBM PC... I have a couple Commodore 64 computers with cassette drives and disk drives, working TI 99/4a computers with an expansion box with disk drives and a cassette drive. Then there are the Radio Shack TRS-80 Computers with cassette drive and disk drive. Atari computers with a cassette drive and disk drive. I have a very interesting Spectravideo SV-328 which was the precursor to Microsoft's MSX standard, their failed attempt to make a dent in the home computer market. Then of course there is the tiny Timex Sinclair 1000.
I believe that the TI 99/4a expansion box (PEB) has a CP/M coprocessor board in it, but I really cannot remember for sure at this point.
Some of them still work but most need new capacitors. Of course, after wasting all that money and effort on “home computers” I switched over to IBM clones and never looked back.