I love to use vintage clip earrings in unexpected ways.
Clip them through buttonholes on jacket or shirt cuffs for a little bling.
Slip one onto a heavy silver necklace for a one-of-a-kind pendant. (Okay, technically one-of-two if you have the pair of them, but you get my drift.)
Dress up a pair of plain ballet flats by clipping them on the toe.