The sharpened broom head that Dwight is seen stabbing the hedge with is the same broom that Creed sharpens for Dwight in Business School (2007).
14 air fresheners were added to Meredith's van to mask the smell of the beer bottles and trash props on the floor. However, the fresheners were removed due to the cast getting headaches from the strong smells.
Jim (John Krasinski) has his real hair in the cold open but is wearing a wig for the rest of the episode. After getting a short haircut for the film Leatherheads (2008), Krasinski famously wore a wig for six episodes in the third season. The wig was very noticeable, as it was redder than his natural hair color.
The exterior shown is the actual Mall at Steamtown. Although you only see the parking garage, it's the actual view looking southeast on Lackawanna Avenue. The interior, however, is not genuine. The real Food Court is not surrounded by stores in the middle of the mall. It is on the second floor and overlooks the rail yards and historic trains of Steamtown National Park.
The 1-800 phone number on the poster is actually a phone number for a chat line.