The plates are hung using adhesive discs. The 4" disc can support a plate up to 6lbs. They have little metal hooks so they're easy to hang, and the discs come right off with hot water! From Hobby Lobby: The small ones were 1.99, the large ones were 2.99.
geometric hand carved rubber stamp. chevron handmade rubber stamp. set of 5.. $10.00, via Etsy.
buttons hand carve rubber stamp - handmade rubber stamp - set of 6 - small - no1.. $12.00, via Etsy.