Large Sew-on patches, made of a soutache-style embroidery over black mesh (edges are rough cut, just trim them off when you're done sewing it on to whatever).
they're very large, really only suitable for adult jackets or shirts, or maybe a throw pillow or something.

choose from either white yarn-like flowered skull with white sequined teeth (about 10 x 7", not including mesh edges)
metallic gold soutache & black sequinned pirate bunny (about 13 x 6", not including mesh edges), or
Metallic silver/black soutache and black sequinned halloween bat (about 12 x 6.5", not including edges)

SEW ON. no iron on. you have to sew them on. SEWWWW ONNNNNNN.