I told R2 this hat didn't go with his outfit, but you know how stubborn he can be.
Well, as you've probably guessed, the R2D2 ornament is Joey's. The hat is one of those super old ornaments that should have been retired years ago only I don't have the heart to throw it away. Don't ask me why, I don't even remember where and when I got it. R2 looks kind of cute, huh?