Pascal running on real Apple II hardware. No big deal. In my all too ample spare time I suppose that I could actually get the PS/2 keyboard to Apple IIe interface working, or I could just simply buy one already made, I think that there are some other people who might still be making them and selling them. Otherwise, a big mess of wires is kind of hard to manage, but not impossible.
But would be a lot more fun to just simply bite the bullet and try to find a replacement keyboard case for the IIe, and go pure retro - with a genuine Apple II compatible SCSI drive in a beige case + the scarce as hen's teeth Dou Disk floppies? Now as it turns out - I would actually like to be able to access my Pascal stuff from my college days, but it's not a high priority. Now, remember - jealousy is a green monster - but maybe it could be beige, under the right circumstances.
Of course, if I were to yank the ROMs from the SCSI card - even though the code type is 6502; it might serve as a basis for a very lightweight SCSI driver for Arduino, or Propeller. Not that Linux doesn't have some nice open-source codes that can simply be downloaded and read - but as always - that stuff is too bloated to run on an Arduino or a Propeller.