A preliminary list: Wrist computer (Epson RC-20, Fossil PalmOS): wear it. PDA: put it in a pocket. Tablet: a large pocket or a briefcase Notebook: under your arm or a briefcase Laptop: briefcase or suitcase, public transit Microcomputer: box, car Small minicomputer: crate, hand truck, a friend with a pickup truck Medium minicomputer: built-in casters, refrigerator dolly, a van Large minicomputer: pallets, forklift, liftgate truck, neighbors and beer Mainframe: pack up and move to where the computer is.
There are exceptions to each category, such as "desktop" computers too heavy to put on flimsy modern desks, minis that won't fit through doorways, and you might already live in a mainframe. Although a Cray couch doesn't look very comfortable for sleeping on.
