I found a box of drink coasters in the shape of a save icon!

How cool is that?

@dgar

Which of these have you used in your professional life?

@sergiovds @dgar
All of them and one of these too.
The white rectangle is a card (think: floppy credit card). 256bytes per side. Yes half a kb per card.
4k of ROM and 4k of RAM for loading the programs, & storing the data.
We managed full accounting s/w, using overlays, programmed in an OCTAL machine code.
And there was an RS232 connection for the IBM Golfball typewriter to print out the reports. #retroComputing