Poster Hanger

When I was a kid, I had a few of these in my room and it made it really easy to swap posters whenever I wanted. Now that I have kids of my own, and we homeschool, the need for temporarily hanging posters on the wall has only increased. So I went looking online for these and couldn't find them anywhere.

This is a really simple design, powered by gravity. A 1/2" length of 1/4" vinyl tubing is inserted into each clip through the hole on the top. The weight of the poster wedges it and the tubing