I like the color project a lot. Work your way through the rainbow - red on Monday, orange on Tuesday, etc.

I'd also love to see a food project. What's on your plate? What's in your stores? What's at the farmer's market? Or an animal project ... what animals do you see in a week? Where are they, and what are they doing? A cloud project ... a week of various cloud formations would be fun.

I love the work you've done in photographing the same scene through the seasons to see the changes; if you did more of those, that would be great!