Made out of the rings left behind when you remove the lid from a plastic water (or other type) bottle, and the small, white plastic zip ties. Clever idea that has my mind going a mile a minute thinking up other uses for this way of connecting these!
"This website is full of great organizational tips and tricks. 52 weeks =52 projects WARNING: Start looking through this website and you will get sucked in for an hour or more. I could have cleaned up a lot in that hour."