Wheel Chocks help keep your car or airplane from rolling.
Print one as a standalone or attach two together with a rope.
Optional lettering is good for a license plate or tail number. It can be embossed or indented.
One chock is fairly large (14 x 14cm). I've printed mine on a Replicator 2x using 8% infill and 4 shells. There's no need to use a dual extrusion printer, but it's nice to have the lettering a contrasting color.