Link: The Camera Lens Mug
Yep, a mate has one... I didnt realise at first, walked into his kitchen as he turned the water tap on....
Now that is a great gift for @Ric_
On the subject of photography: A failing attempt a Tilt-Shift:
Further to the subject of photography: Cross Section Views of Leica Lenses:
Source: Cross Section Views of Leica Lenses
That's a good one :)