As a fan of both postage stamps and interesting insects I couldn’t help but to try this out. Just about as small as I could do without magnification these 4 lil fellahs are about the size of a postage stamp each.
Each is an original hand painted acrylic paintings each on .75" x 1.375" illustration board.
(21mm x 34mm Fibonacci Golden Rectangle.)
They each have a magnetic strip on the back for mounting on a refrigerator or steel doorframe or door, etc.
You can purchase these in sets of 4 at my Etsy store here.