Internal debate.

There's one book (actually, an audiobook) on the return cart.  I'm working alone.  If I get down to the end of the day, and there's still only one book there, do I:

• Put it away:  I'm nice, I want to leave an empty cart for my coworker on Monday.
• Leave it there:  Why should I put a single book away?  Better to let it get put away with the next full batch.

I suppose it's just laziness, but it's a question I face every time I work alone.  Is this really worth it?  If I were working Monday morning, I'd leave that book for my next large batch of returned books.  Why do something different because it's not me, but her?

Yeah, yeah, I'll put it away.  Jeez.