I have a physical thing of which I neither know what it is for, nor what it is called. Would it be adequate to post a picture of it on this site and ask what that is?

So it's not just a question like, "I have this thing and it is good for X, can you tell me what its name is?" But rather I don't even know what it does. And I don't know what the right place would be to post a photo and ask this question.

If this site is not a good place to ask, any idea where the question would be a better fit?