Here is a very nice idea for unique shipping labels: use the rectangular label to write the receiver address, and the circular label to close the envelop with your address. You can also use them for a scrapbooking project or to label a box of mementos from a trip.
Click the image to download the pdfs printable file.

Rectangular format:
WL-150 | Shipping Label
Size: 4″ x 3.33″

Circular format:
WL-350 – Round Labels
Size: 2.5″ Circle

Have Fun!