Well, our ship is a garbage scow, and we're darned proud of it!
We put together Trek-inspired original uniforms and carried a garbage bag with some of the stuff we found cluttering up space (a hand clutching a lightsaber, a map labeled "Jupiter 2," a teddy bear wearing a B-5 uniform, etc.). We were all Sanitation Engineers, of course. And boy did we tell off those Feddies and Klingons about the mess they leave behind after their space battles!
Everyone had fun, including the Trekkers we hassled. Here's the one and only photo known to exist (with a slightly altered sign behind us).