Light-duty hanging bracket

I liked emmet's Universal Art Frame, but decided to use something different for attaching the art to the wall. Since I used a foam core backing and no glass in front, and the pictures I was hanging were small, a lightweight solution seemed OK.

So, here are some simple lightweight hangers for foam core or similar material. I super-glued them to the back of the foam core, and hung them on wire nails with small heads.