Curved metal connector about 1/2" long with a hole at either end. They look like miniature handles. Also shown above on a 2 Inch Suitcase (note: these are just simple bent bars with holes so you'll need to figure out a way to attach them).
Set of 2.
Teri Calia made The Naturalist's Curiosity Cabinet (see the wide photo below). More info in the blog and/or see the supply list.160821AC 220911LCHG 160908LM 160926TC