This is a very interesting photo that double bassist John Tuck forwarded to me. You can see that someone decided to take the body of a bass and use it as the soundboard for a harp. I’m not sure how well that works, but it sure looks cool.
This photo is especially cool to me because my fiancee (and sometime co-host for Contrabass Conversations) plays the harp! We also both like to drink Harp and Bass beer, respectively. We are nerds.