Here is Pratchett describing a very grand piece of furniture: "Probably the last remaining tree of some rare, exotic species had been hewn to make the chairman's desk, which was an object of desire and big enough to bury people in." Very nice, with a touch of nastiness. And let us see if the same page where this appears contains another good one. Yes, near the bottom: Mr. Fusspots, an ugly lapdog, resembles "those goldfish with the huge bulging eyes that looked as though they were about to explode."
(Thanks to Jenny Davidson for the link.)