Sorry, my Sunday got a bit too Funday so I forgot to post.
The thing in your hands when you're wasting time.
This reminds me of the literary device called Synecdoche. It's when a part of something refers to the whole of something. Like calling business men "suits" or calling soldiers "boots". The specific example this made me think of is counting how may "head of cattle". I know it's quite loosely tied to this painting but I couldn't think of anything else to talk about so there's a tiny English lesson for you.