From the cool #retrocomputing file, how about the Outbound Notebook from 1989, a portable Mac clone that depended on scavenging a ROM from an actual Mac in order to boot. Apple obsoleted these folks out of business ASAP.
Notably, the Outbound used a "pointer bar" that rolled vertically and slid horizontally for cursor movement. Also, it used commonly available camcorder batteries rather than a custom battery to try to make it easier for users to get spares and replacements - what a novel concept!
@viv I'm curious myself - I love a nice interesting pointer device
@djsundog One of my computers is on that site.