I've been wanting to make peanut butter playdough forever and this post at Make and Takes has tipped the scales. We're going to make this today!
I'd love to try Maya*Made's recycled paper flowers with my scissor-happy daughter soon. I think children could easily make a simplified version of these (with regular scissors, not those scary Edward Scissorhand scissors Maya used!).
And check out this post at Filth Wizardry about drawing on their glow-in-the-dark wall! Seriously. They painted one of their walls with glow in the dark paint, inspired by a wall at the Exploratorium in San Francisco. So cool!