Writing Box
TL4. Early scribes wrote on their laps, but during the Middle Ages, special furniture was designed for writing, and by the Renaissance it became portable. The writing box provides a sloping surface on which to write and drawers on the sides to hold paper, ink, and writing tools, but closes up into a small rectangular case. $50, 2 lbs.
Source: GURPS 4th - Low-Tech, page 49