Hide it in a book: Find a book or magazine you know your partner will read and write or tape a note that tells them you're thinking of them.

Android doesn't ship with a note-taking app, and if you're gonna grab one, it might as well be one that syncs notes, photos and files across multiple platforms, even if it's still in beta.

Think of the stage as a blank piece of paper onto which you can stick post-it notes.