Finally, another very simple and versatile option is to use your business cards. Again, you can punch and/or pierce holes in the card, and then attach the jewelry to it. This way you end up sending some information like your web site URL along with the jewelry piece. I don't know about you, but I always tend to buy a huge number of business cards, and honestly, I will probably never use them all. This way, I can get a little more bang for my buck.
Of course, you can also buy tags and earring cards already made up from most commercial vendors who sell jewelry displays; however, since my jewelry is all hand-made, I always felt like I wanted to have cards and tags that connected with the idea of hand-crafted products.
For more information on jewelry packaging and marketing, see these links:
Plan Your Jewelry Business Attack
Signing Your Jewelry
Tips for Packaging Jewelry When Selling On-Line
Links to Vendors Who Sell Jewelry Displays
