Bookwork is for $5/week pocket money. A bookwork "session" is two pages of a book, one set of exercises in Reading Eggs/Reading Eggspress/Maths Seeds (usually 10 short exercises, with Reading Eggspress it depends on what Tao chooses to do at the time), one "stack" of problems or one video in Khan Academy. The rules for earning extra have changed, rather than doing extra bookwork the bigs can now embark on a research project of their own choosing. They get an extra $5 for a relatively simple thing like a poster, $10-15 for essays/reports with diagrams, $20 for a fairly detailed book (appropriate to age obviously).
Weather and mood dependent. Alternate. Attempt to drag other people along for the ride.
Ideally this will involve actual "school group" type excursions and activities. If I can't amass a required number of people at the required time, quadrapop, Chappie, myself and our respective broods will go have fun there anyway.