Bowed psaltery--too high and thin. Grates my nerves.

Autoharp--actually, I think I dislike the manner in which this is played more than the instrument itself. It seems to invite schmaltz. I have heard some very good players but I often have a really hard time with the repertoire.

Not a big fan of the pennywhistle, either. Again, too high and shrill (my dog will second this).