Lots of suggestions

Okay, so I'm sitting here brainstorming and I've come up with several ideas for the weekly challenges. Have a look let me know what y'all think.
Specific colors, shapes, or numbers, words or letters, cars, candy, bubbles, bubble gum, buildings, art. . .
Well, I could probably think of some more, but I will leave it at that for now. Thanks!
Melissa

Those are some good ideas, the specific colors thing I have thought of, it will probably happen some time. I would suggest having a specific thread for just one suggestion though so people are leaving comments about the same thing. Also adding a poll like Janae did is helpful so we can get a feeling for who likes it, and who doesn't.