Hangers for hanging...

I've been looking for some cost-effective way to hang some Haeckel prints I'm printing up at Costco in my new Victorian science lab inspired office, and remembered this idea:


(found at AT, but I think it originally was featured in Real Simple or Ophrah.)

(via Window Ledge Arts.)

It hits the "gadget" "wood + metal" and "vintage" buttons, but does seem a bit informal. (But it's definitely cheap, and would be easy to change!) What do you think?