When we were in Wimbledon just before Christmas, we came across this outfit selling extraordinarily realistic tools made out of chocolate. I thought they were very impressive, and the chocolate samples tasted good, too. I don't know how they get the finishes, but they include very good brass, steel and rusty iron effects. I got some for my brother-in-law who is a gifted mechanic, amongst other things.
It struck me that if they could get around to making a decent teapot, it could make an ideal leaving present for that useless departing colleague.