Use mini hangers for mini quilts, your 12" to 20" squares. Regular backs slide over push pins and magnetic backs cling to smooth metal surfaces.
Ash minis are shown in photo with regular hole back (right) and magnetic back (center).
Mini hangers measure 1-1/8" wide x 1-7/8" long (28mm x 48mm).
Sold as individual units. Use one for a tie clip, but order two or more for fabric hangings !