I'm trying an experiment with my daughters this week where I'm asking them to create a new project every day based on some simple ideas: they are participants, I am a very hands-off guide, they work together to do something worth while. They completed their first project today—Eat Your Yard—where they had to find edible plants in our yard, find/create recipes and build a dinner menu using them, and cook dinner. It occupied them the whole day and was a resounding success.
Feel free to use/modify the project I gave them below. I unveiled each new part only after they had completed the previous activities and we spent time while eating the dinner they made reflecting on the project and what we might do differently next time.
The girls sprung one welcome surprise on my plan: I was expecting them to find and follow existing recipes, but they instead created their own recipes from scratch. I'm encouraging them to record (at least) the more successful recipes, like the garden lettuce with basil and a lemon vinagrette, and the mango-apricot juice with blueberry icecubes.
Warning: While the project was largely self-propelled, cooking dinner took a full two hours with both 6 and 10 year-old chefs.