I still remember burning the dsl livecd image to a mini-cd shaped like a credit card (edges trimmed off) and using it on university workstations.
Yeah, I had one of these in my wallet with DSL.
https://en.wikipedia.org/wiki/Bootable_business_card
I'm sure I burned a Gentoo stage 1 boot ISO onto one of those card-sized discs.
Yeah, I had one of these in my wallet with DSL.
https://en.wikipedia.org/wiki/Bootable_business_card