| title | ISBN-13 | year of publication |
|---|---|---|
| Cat Naps 2006 Calendar | 978-1-4162-1100-6 | 2005 |
| Cat Naps 2007 Daily Boxed Calendar | 978-1-4162-1301-7 | 2006 |
| Cat Naps Boxed Notecards | 978-1-56906-795-6 | 2005 |
| Cats in Hats 2008 Wall Calendar | 978-1-4162-1325-3 | 2007 |
| Cats in Hats 2009 Wall Calendar | 978-1-4162-8013-2 | 2008 |