And now for the world's silliest laptop: weighs 25kg, has up to six 24" screens, 192 CPU cores, 6Tb of RAM, and two GPU cards: the a-X2P mobile media workstation! https://www.mediaworkstations.net/systems/portable-amd-workstations/a-x2p/
a-X2P | Portable Dual EPYC Workstation PC

The a-X2P is our dual AMD EPYC portable workstation. Configure with up to 128 Cores and 2TB RAM for stable, render farm power in a rugged, mobile form factor.

Mediaworkstations.net
@cstross I remember the Osborne CPM portable. It was referred to as luggable
@JohnLoader6 I owned a Victor Vicki back in the day. MS-DOS but not PC-compatible luggable, about the size and weight of a sewing machine. At the time I loved it but today my bones and sinews would not think of it fondly …
@cstross my latest pc is the size of a square small book and clips onto the bracket lugs on the back of the vdu