Product Photography Backdrop Boards, 3 Pack Double-Sided Black and White Photo Background, Waterproof Tabletop Backdrop Set for Small Products, Jewelry, Cosmetics, 12 x 12 & 12 x 16 Inch

Ok, in my head, I immediately pictured a portable photo backdrop. Like this: https://a.co/d/00BLAutJ Says the surfaces are waterproof. You can easily take them apart and rinse them off. You could also just buy it for the brackets and replace the boards with plexiglass or something from the hardware store.