It's been a while since I've posted one of my “What am I?” quizzes, so here's one. What is it?

As usual, I'll hold comments privately until I publish the answer. —Jeffrey

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It's been a while since I've posted one of my “What am I?” quizzes, so here's one. What is it?

As usual, I'll hold comments privately until I publish the answer. —Jeffrey

Leave a comment...

Toaster?

No idea…

A little hint maybe?

Music instrument?

I’ve posted the answer here.