It is obvious what they do: you put them out in a prominent place when your friends come round (if they can remember where you live after the past year) making sure your funky new workshop LED lights shine directly onto the RC signature. Leave the price tag on. Any actual use invalidates the warranty anyway.
Also they are very good for balancing half a dozen beers on apparently. Ideal for Oktoberfest activities. Much more reliable than a Bavarian serving wench.