| Attribute | Description |
 | The postals in these trackers have a movie attached! Stamp into the box, then watch the movie! |
 | The postals in these trackers have music attached. Stamp into the box while listing to the CD included with it! |
 | Surely you know where this is going, right? There's a book to read with these postals. These trackers will probably move a lot slower than most if participants actually choose to read the included book. |
 | These trackers include an altered book with the postal. |
 | The postal in these trackers can be anything under the sun—whatever floats your boat, and who knows what others might do. |
 | These trackers have a theme that everyone is expected to follow. |
 | It's okay to reuse an old postal for these singles or rings. |
