Select 4 paint chips.
Glue 2 chips back to back.
Pierce with compass or darning/tapestry needle.
Bend a little in the middle and arrange to meet at seam.
Lie flat and cut a length of strong fishing line.
Thread down the card and up the other side. Knot.
Add a big button for stability and to catch the light.
Another idea. Make sure to tie a knot before and after each card so they don't slide down.
I made a couple of these recently and to my great surprise, they have survived torrential rain with only a little curling! Great way to use up chips from a recent project or grab some new ones from the hardware shop and get creating!