What's Joni playing in this clip?

Cafe Society
1

Obviously a sort of lap guitar thing, but what’s its proper name?

thanks

2

I believe it’s an Appalachian dulcimer. Appalachian dulcimer - Wikipedia

3

Thanks, funnily enough just as I read your answer I got to the point in this version of the same video, at about 16.21, where Joni explains that it is indeed a dulcimer and who built it for her.