There’s a lot, but two in particular stood out: Clinton tried to imply that Trump was uncharitable, and it was a perfect setup for mentioning how parsimonious the Clinton Foundation is with money it actually distributes to charity end-users.
The other was a Clinton remark about not abandoning or ignoring (or something) our friends overseas or something to that effect, which was of course a prime opening for Trump to respond with “Oh, like we did with the Americans in Benghazi?”
Trump: "I may not be the most-liked boss, but at least I don't kill my employees."