Can't wait to steal her Droid and sneak-install a cheesy valentine I made
Construction paper, glue and glitter? Bah. Android App Inventor:
Hopefully she won't divorce me on the grounds of irreconciliable nerdiness.
2012 update: Sadly App Inventor is no longer, but Lifehacker published a platform-agnostic approach
Uploaded on February 14, 2011