Just purchased 4 Apple II cards through eBay. Actually, I was only after the IEEE-488 card but also included were a Microsoft Z-80 card as well as a couple of other interface cards. Will worry later about the rest, currently want to see what the 488 card can do in a IIGS.
Also working on purchasing some other Apple II related items and/or emulation items, including an MFM emulator. Not sure if there were ever any MFM hard drive controllers for the Apple II, but thought it might be an interesting bit of kit at some point…
Eventually going after Ian’s Mockingbird-compatible card, have a bare SDisk2 card, and a couple of prototype boards. Now to find some kit to build from all of this stuff… did I mention that I have around 10 printer/parallel port cards? Must be adaptable to some use.