I didn't realise this existed. I would have been more than happy to contribute what little content I have.
I don't figure anyone still working on this chapter, but on the off chance that some of you are, or that this book will be in use again next year, I have a ladder game, an easy crossword and an activity sheet. The last page of the activity sheet is something I downloaded from somewhere on the web. It has graphics from what appears to be a previous version of the book, though the content is still the same.