Fuji X mount double ended lens cap.
I've been wanting a double lens cap for my Fuji but no one made it, so I just designed it and had it printed at Shapeways. I'm very happy with it... I was often changing these two lens and switching the caps with both of these small lenses in one hand.
5.462 w x
5.462 d x
2.15 w x
2.15 d x