I love walking into someone's home and seeing their childrens' artwork proudly displayed. The idea pictured above is particularly clever because the hanging clips make adding and swapping art a snap. It also allow this family to showcase a lot of drawings and paintings (one row for each child perhaps?) while still looking organized and uncluttered.
The mechanism used is actually a 3-part Ikea curtain wire system called Dignitet which consists of the wire rod ($15), corner pieces (2 x $5) and the curtain ring clips ($5) for a total of $30. Has anyone seen a similar product for folks who don't live near Ikea?