I took some clay pendants that I made in pottery class last year, but you can also use vintage buttons or knit a swatch from your art yarn and hang it using this style of hanger. You could also try making pendants with air-dry clay. Or sew scrappy letters and hang it in a baby room so it spells their name. Or tie feathers to the ends. The possibilities are endless!
After I took the clay pendants, I tied them to art yarn with a secure knot thru a hole I made in the pendant, and a knot at the top of the yarn. I opened the hanger and placed the knot above the wood and lined the yarns in the order I thought they looked best. Then I closed the hanger so that the knots kept the yarn from falling thru (but the hanger itself is pretty tight so that keeps it secure as well). Then I hung it on a wall.
Make a windchime by plying your yarn with tiny bells and hanging in an open window!