Egglings are ceramic eggs with seeds. They're $8.95 each and are available seeded with lobelia, phlox, thyme, mint, and petunia (seen here). From the ELSEWARES product description:
These ceramic EGGLINGS look and feel just like real eggs. Just crack one open, add water, and you've created a springtime oasis for your desk or window (even if it's winter outside). Each comes with a terra cotta tray and seed pack. Growing is EASY – plants thrive for months in their shell and can be replanted in soil. Sold individually.
Link (Thanks, Lindsay Tiemeyer!)
