White plastic sew-on rings. A lower cost but greater labor alternative to shade tapes and/or shade ribs.

A Strong Note Of Caution

A Flat Roman shade made with Sew-On Rings, lacking ribs, DOES NOT have any way to hold the shade's "folds" in place across the width of the shade. When raised, a Flat Roman shade made with Sew-On Rings tends to have the fabric "bunch up" and WILL HAVE TO BE FUSSED WITH EACH TIME IT IS RAISED in order to manually recreate the crisp folds that come naturally to a ribbed Flat Roman shade.  More details...

When are Sew-On Rings appropriate with a Flat Roman shade?

If your shade is going to be relatively stationary OR you don't mind fussing with your shade every time it is raised.