The restaurant boat was small but nicely set up, with eight tables, some with four chairs, some with two, nothing fancy, but clean and very classic with with castles and roses painted on every available surface. . . .
Sam had obviously worked out that Mum was not 100 per cent up to par today and he had decided that some good behaviour might get him another chance to turn robots into chickens, so was quietly playing some complicated game with the crucible set.
Marie Browne, Narrow Margins (Mid-Glamorgan: Accent Press Ltd., 2009)
From the context, I figure that "crucible set" is a term for tea set or some collection of crockery or tableware. I've found some candidates by searching Google images--but I've also found a bunch of pictures of stage sets for "The Crucible" as well as crucibles designed for use in chemistry and metallurgy labs.