...and here`s the website of

http://www.washboardchaz.com/

mentioned above. I saw him when I was in N.O. (thanks to PoppaGator for the recommendation), he is well worth seeing/hearing.

I bought a little washboard tie down there - quite fun and always an eyecatcher in sessions.

Playing it sparsely to tunes where it fits (and know them) is a good advice.

Best
Ernest