Sing Christmas classics to your heart's content, thanks to Song4Christmas v1.0. Six different songs in apparently four different languages, including "Stille Nacht" (Silent Night in German) and We Wish You a Merry Christmas. There's even a karaoke mode to help you keep in sync. Works with versions 5.2 and up of the Palm OS. Some additional software may be needed to get it to work though.

If you want to share funny Christmas pics, you can install Funny Christmas Things and Images in a [sic] Album on certain Nokia and Sony-Ericsson smartphones.

Thanks to MobileTopSoft for the heads-up.