I'm a self-taught, beginning guitarist. I can play some basic chords, either strumming or using a basic fingerpicking pattern.

I'm looking for duets that I could play with my wife. She plays both ukulele and cello. On the ukulele we currently both strum the same chords from basic songbook, which was good when we were both completely new, but it would be nice to try something with musical harmonies now.

Any thoughts on either?