Flatirons Invisible Disc Adhesive Plate Hangers (Variety Pack, 15 ct)

The invisible-disc route: stick a wetted disc to the back of the plate, let it cure, and hang it flush to the wall with nothing showing. Includes 2", 3", and 4" sizes.

Good to know: Needs a full cure time (often 24 hours-plus) before hanging, and works best on lighter plates.

As featured in our guide Decorative Wall Plates: How to Style a Grandmillennial Plate Wall.