Howdilly doodilly neighbours. Question: are there any instruments that can be played without the left hand?

I have been forced into fiddle/guitar sabbatical of indefinite length because of tendinitis or some such tragedy. Fair enough, I want to heal properly and I suppose it's good for me to have a chance to study up on theory. However, I've been getting so desperate for music that yesterday I resorted to playing pennywhistle, but I'm paying for it today, so that's out.

Any suggestions? Maybe I'll have to start paying more attention to my voice, eh?

And just so you know, I've already considered and rejected becoming a page-turner, a "Chopsticks" pianist, or sitting on some guitarist's lap and strumming while he frets.

Love,

Marion