Two 10 × 11 cm cards — modelling shortcuts for either side of a 15″ MacBook trackpad.
Print & cut
Print on A4, landscape. In the print dialog set Scale = 100% (not “Fit to page”) and turn Margins → None/Default — this keeps the cards at exactly 10 × 11 cm.
Cut along the dashed borders.
Slide card 1 under the keyboard on the left of the trackpad, card 2 on the right.
Keys: single letters are default command shortcuts (press to start the tool). ⌘ Command · ⇧ Shift · ⏎ Return · Esc cancel.
Preview below is shown enlarged; it prints at real size (10 × 11 cm each).