Gearboxes for boardgame HEAT: Pedal to the metal.
Two sizes - minimalistic (smalest as it can be) and bigger (fit on board).
Doublesided! From one side is classic gearbox for shifting from the other just putting in places.
Simple one piece and print in place.
Recommended 0.2 mm layer height and full infill for better behavior. For multicolor just switch color in 4th layer and 14th layer. Or you can paint it with acrylic colors.