Someone out there living near Clinton, Tennessee, site of the Museum of Appalachia, with its great collection of traditional musical instruments? For a first impression, check the documentation about this treasure on http://www.cigarboxnation.com/video/museum-slideshow.

To study the details of the presented instruments, to refer to a single instrument, a busy slide show is far from ideal, it would be…

Finnish lumberjacks played on their camps an instrument similar to One String Sam's diddley bow, sometimes in duett with a crosscut saw.

For finnish followers I add here descriptions I found on internet:

sippiviulu - säilykepurkista, laudanpalasta ja kitaran tai viulunkielestä tehty savottajätkän soitin.

Olen jopa nuorena nähnyt sahan soittoa sekä sippiviulun soittoa duettona. Sippiviuluhan on laudan päälle viritetty peltipurkki jonka yli menee rautalanka…

http://www.palmguitars.com/item.html#1529

http://www.palmguitars.com/item.html#1530

Just another type of resonators, based on gramophone pickups