There is also a song Frank Warner collected called "Fod" which might be just the thing for the farmers' market. I'm sure it's in the DT or at least discussed in the threads but I'm too lazy to look. The first verse runs:

As I went down to the mowing field,
Tor-rih, tor-rih, foddy-dink-y-dy-do;
As I went down to the mowing field, fod!
As I went down to the mowing field,
Big black snake bit me on the heel,
Tor-rih, tor-rih, day!

Cheerily,
Charley Noble