Unofficial Geocache sticker - tiny size - about 7cm by 3cm - so an ideal size for those mint containers, or containers of a similar small size. Identifies your precious stash as an "official" cache, so a lot less "muggle freak out" happens. And the longer your cache will live. Probably.
My favourite stickers. A great size. Versatile. They are great quality and stick very well. Not flimsy, made of quality plastic which has lasted on all my caches so far. I have used them on various surfaces from plastic, metal and felt.