Mike Wood of West Salem, Ohio has figured out an ingenious way to slow traffic in his neighborhood. He makes life-size cardboard cutouts of his children. Then he places the cutouts along the side of the road. People driving by think there's a real kid standing by the side of the road and they slow down.
I could use some of these on my street. I live on a busy road and sometimes people just go tearing up it. Though some traffic cones and a detour sign might be able to eliminate the speeding cars altogether.