While she was sleeping, he slipped this around her neck.
He made a whole CD of every love song (no matter how cheesy they are) that he knows she loves. The first track was their song, and he woke her up by playing it and serenading her with it. Here's where I should add that Sage? Is not much of a singer. At all. So it should make for a plenty funny little thing to wake up to. And basically, all throughout the day, he'd play another song and randomly break into singing it to her when she least expects it.