It’s #retrocomputer time!
What vintage computers are you aware of that can be tricked in to talking to readily available modern hardware?
(Thread. I got stuff on my mind.)
@ajroach42 I saw an sd to scsi adapter for vintage macs that have internal HDDs (se/30 and later, iirc)
There are various sd2iec drives for the c64 and similar.
The hp-200LX can read small CF cards without a special driver and large ones with a special driver, and most computers with IDE ports can have CF cards mounted internally.
The tandy 100 accessed its floppy drive over a serial port, which can be emulated on raspberry pi.
What else?
maple classic™ 
@ajroach42 tape drives can be emulated with phone apps, using a standard audio cable to connect the phone output to tape input
@squirrel I would love to find some software like that for the various 8bit micros. I’ll go dig around.