I'm sure you've heard it said that "necessity is the mother of invention". This is definitely true with this project. My kids were bringing home so many cute art projects and the fridge's real estate was a hot commodity.
I wanted to create an art wall that could revolve as new projects came home, but I didn't want to spend money on it. I searched high and low for something that could be used to achieve my goal. I hit the jackpot when I came across a few packages of guitar strings in the back of my desk. The great thing about guitar strings is that on one end they have a little ring that is the perfect fit for a nail to go through.
For this project I used 4 guitar strings, two for each row. Because there is only a ring on one end of the string, twist the two strings on the other end together. Put a nail through the end ring and nail it at the height you want on one end. Measure how far down from the ceiling your nail is. Pull your string taught and measure the same distance down from the ceiling on the other side so that its level. Nail the other side up.
The clothes pins can be purchased at any craft store for a buck or two. These were spray painted black to coordinate with the room.