http://www.hydro-gardens.com/growsup1.htm

If the link above works you will find plant clips shown on the lower part of the page. I use them in the garden to hang my tomatoes and cucumber vines. I'm also finding them handy around camp while backpacking.

I use them to hang a thermometer and light from the ceiling of my tent. I also string a length of kite string between two trees and hang laurndry, my water filter, etc. from the string. These handy little clips grip the string inside their hinge when closed. This keeps the stuff on the line from all sliding to the center of the string. They open and close with a click and are very easy to use.