While not "portable" in the common modern sense, we also had:
Apple IIc (https://en.wikipedia.org/wiki/Apple_IIc)
and it's younger and final brother Apple IIc Plus (https://en.wikipedia.org/wiki/Apple_IIc_Plus)
Apple IIc (https://en.wikipedia.org/wiki/Apple_IIc)
and it's younger and final brother Apple IIc Plus (https://en.wikipedia.org/wiki/Apple_IIc_Plus)
Edit: Okay, I was actually thinking of the Apple IIgs, which came out 2 years later. Both a similar design, though, and much nicer looking than the older Apples.
Perfect for some poolside work.