I found these at the Catfish Conference in Louisville last weekend. May not be new to some but they are new to me. Leader storage system called RIGRAP. Seems like great way to keep some pre tied leaders safe and in good condition until they are ready to be used.
Space in the center is for hooks, sinkers, a float or even a lure. The leader material wraps loosely around the outside.
Different sizes are available to accommodate a variety of different tackle.
They have a website and Face Book page if you would like to check them out.