Beware: there are Apple I clones built in the 21’st century that are very, very close to the original board, down to credible date codes on the chips. I can get plenty of chips with date codes to the early 1970’s. And there have been people who have faked date codes on chips.
I’ve seen those projects, interesting, but I don’t want a 1mhz 8-bit bare-board computer to play with. If I’m going to get a bare-board CPU, it’ll be a Raspberry Pi. :’)
I did buy one of Rich Dreher’s CF adapters for Apple II, works great, and I think he’s working on an Apple I version now.