Measure tray table widths before you buy, then choose a footprint that centers weight over your lap rather than digging into hip bones. A grippy underside prevents creep during turns, and a breathable cushion stops heat buildup. Test at home by typing while walking slowly on a treadmill; stability you can trust there will feel magical on a swerving city bus.
Laptops exhaust downward and sideways; a solid pillow blocks airflow and bakes thighs. Pick a vented platform or small stand to raise the intake. Angle adjustments align wrists, easing pressure on the carpal tunnel during jolts. Combine brief micro-breaks with forearm stretches every two stops, and consider an external trackball when space permits, reducing pinch grip fatigue across long commutes and unpredictable transfers.
Favor modular pieces that nest: a slim lap board, a folding riser, and a keyboard cover doubling as a stand. Each item should justify its grams by saving minutes, wrists, or noise. Keep a tiny microfiber under the board for sudden benches, and stash a cable tie to attach pens or styluses so nothing rolls away when the brakes squeal unexpectedly.