That's what I call it as well. Judging by all the shopping results I get for it via Google, that seems to be a standard term, at least in AmE. I think I have heard them called keyboard shelves, though too. I agree with the OP's choice for item 2.I have encountered the term keyboard tray in AmE but am not certain how widespread its use is.
(The keyboard goes on the desk, not in the drawer.)
I am not sure why my original post was edited. I was the thread starter, so it was pretty clear that I asked the question. I didn't quote anybody, so how could I answer their question?
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