RE: water, paper clip, etc.
I chose "cell phone", which must have been correct since I scored 100%, but frankly it was a guess. My rationale was the listed items are things you'd find
on top of a desk. Cell phones would commonly be placed atop a desk, whereas pushpins and magnets would normally be stored in a drawer. (My cell phone is usually atop the desk rather than in my pocket, so that I can see it ring when I have headphones on.)