I'm a big fan of labels - they identify you as the maker and show the world what you've created. Personalized labels also may an item look professional!
I purchased my satin labels online at Heirloom Woven Labels. But I've found some at All Things Labels and Namemaker.
You can also make your own labels. Allyson Hill has a great tutorial.
If you'd like to learn more about lovely labels, go to Sew4Home. They have some wonderful examples so you can see exactly what is available to you!