Amy mentions that her sister needs a new windshield. This is the first mention of Amy having a sister. While a number of Amy's family members appear throughout the series, including her parents and her brother, Eric, no sister is ever seen.
At the end of every episode the card for the production company Spitzer Holding Company features a variety of items they specialize in. In this episode they list For-Profit Universities, Solar, and For-Profit Prisons.
Amy's name tag says Bobbie.
The song playing while the Cloud 9 employees dig through the lost & found bin is "HandClap" by Fitz and the Tantrums.
One of the protest signs from Strike (2016) is found in the parking lot, buried in the snow. How it was never discovered in the months between episodes, prior to heavy snowfall, is unknown.