recreational vehicles were perhaps the first vehicles to display decorative lighting. while stationary and hooked to mains electricity at a campground, rvs often display festive lighting. this was often strings tiki or other hawaiian-style decorations, or plastic lanterns, lit from the inside by screw-in christmas lights. various miniature lights in non-holiday styles (or patriotic themes for u.s. independence day in the summer) are made, and are often now used on patios in the same way. boats can also be decorated in this way, and some "parades" are actually boats on the water, lit with strings of lights.