LaMarca is right about Little Potato. It is on what I believe to be the first album by Metamora. I think it also was re-released sort of a couple years ago on a CD called "Keepers" put out as a fund raising premium by Minnesota Public Radio. I have also heard a choral version of the song. I think it was by the Concordia College Choir (or some other Luthern school).
A great little song not yet mentioned is Tom Paxton's "Hey little brand new baby".