A variety of shaped of <a href="//commons.wikimedia.org/w/index.php?title=Appalachian_dulcimer&amp;action=edit&amp;redlink=1" class="new" title="Appalachian dulcimer (page does not exist)">Appalachian dulcimer</a>.  I don't recall all the makers, but the small dark-brown one is a Hughes, the violin-shaped one is a Pete Wheeler, and the leaf-shaped one is a Cedar Creek.  The one on the far left with the painting is out of some small outfit in Washington State.
<a href="//commons.wikimedia.org/wiki/User:MatthewVanitas" title="User:MatthewVanitas">MatthewVanitas</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>