Thought for the day...

[blearyeyes]

But sometimes I used a friend's grandfather tip: put a thumbnail sized piece of bacon and heated it with a lighter, so it half melted and started spreading fumes (and smell); it seemed to attract all big rats in the building.

That would attract half the guys I work with.

[blearyeyes]

This used to be considered "portable": Osborne 1 computer Having lugged one around back in '82, I can confirm that it was liftable, and could be moved - with some back strain - from one location to another. If that's your definition of "portable", so be it.
.

looks like a modified Tandy computer