As a bit of fun, I decided to decorate the cat's 'tree'.  Rooting through their toy box, and realising how many toy mice they have, I decided to create a nativity scene with them.  The angel is actually a small toy cat, rescued from the church clear out last year, and yes, there's a chicken (rather than a camel or a donkey!) and a tiny dog (instead of a lamb).

Both cats were very curious about it - with Sophie even snuggling up in the 'stable' for a while.