I'm part of a collaborative writing project this year, called Narrathon. It's being organised by NAWG and involves 19 writers completing a chapter each to produce a children's novel for publication in the second half of the year. The project is now open for donations, and all the money will go towards the upkeep of NAWG itself.
Mine is chapter three - and it was tremendous fun writing it in January. I can't wait to see the book in print and get to read the whole thing!