You can’t go wrong with squares stickers / labels. They are certainly up there with circles as some of the most popular shapes – and for good reason. Unless your artwork consists of a truly elaborate shape, then virtually any design can fit comfortably into a square.
Printed square labels and stickers are extremely versatile and allow for the vast majority of uses whilst being suitable for any type of artwork. You can use them for promotional advertising, informational needs, branding purposes and more.