These are so dang cute! Miniature version of the Faux Metal Number Plates 1 to 25, but with addition numerals for a whole month (these are just 3/8" diameter).
Just painted chipboard but have a vintage look (and you can age them further). They have 2 tiny holes on the left and right side for attaching (at this size, I'd say stitching).
Number plates for 1 through 31.