Nesbit, E: Phoenix and the Carpet

Anthea, Cyril, Robert, Jane, and the Lamb are back - the Psammead may have vanished but there are plenty of wishes still to be granted.
'Rain, rain, go away,' said Anthea; 'but it never DOES go'
I expect you know how boring it can be to stay indoors on rainy days. it was on one of those dull days that the five children accidentally set their nursery on fire (with fireworks). No one thought that that disastrous day would bring the start of new adventures.
But the new nursery carpet, when it arrives, comes with something odd wrapped inside it: an enormous glowing egg. And inside is the most beautiful bird you've ever seen - in fact, not a bird: a noble and fabulous phoenix. New adventures just might have begun...
Includes exclusive content: In the Backstory you can ponder what you would wish for and find out which character you most resemble!