One of the pieces of "junk" that falls out of Meredith's van is a sign that says "Justice for Caylee". Assuming it was a sign for Caylee Anthony, who was murdered in 2008, that sign has been in the back of Meredith's van for 3 years.
Erin (Ellie Kemper) says "I would like another alcohol" to Robert. This is very similar to the funny way Becca (also played by Kemper) asks for a drink in the movie Bridesmaids (2011), released a few months earlier: "Excuse me, could I have a glass of alcohol, when you get a chance?"
Continuous running gag: Meredith was thrown around at the back of her van.