SAE J1772
With the new proliferation of vehicle charging stations, conversion of a vehicle to accept such power (even if only the appearance of such) opens up a wider range of parking spaces.
Project is to OpenSCAD a SAE spec J1772 connector, with minor variances to ease Makerbotting with requisite rigidity.
Follow-on potential can include actual use of the connector for power import (running fan on hot days, heat on cool days).