In partnership with hard-shell case maker Speck, the custom-art merchandise site Zazzle will be offering custom cases for the iPhone 4, 3GS and iPad starting Tuesday. The cases are fitted hard-shells with a fabric backing that features the custom photos, art and/or text designed by the user. The cases can be produced in as little as 24 hours, and templates in Adobe Illustrator, PNG and JPG formats are now available for download.
