The Kanamits reappear, as a nod to the original series episode To Serve Man (1962). A cookbook on Janet's counter is named "To Serve Man".
George Takei (Kanamit #1) previously played Taro "Arthur" Takamori in The Encounter (1964). He is the first actor to appear in both the 1959 and 2019 versions of "The Twilight Zone".
The front company selling the Eggs is Whipple, which has been mentioned various times throughout the second season, and is a nod to the original series episode The Brain Center at Whipple's (1964).
On her Fulfillment card, Janet's address is listed as "1015 Fremont Street". "Fremont" was the name of the boy played by Bill Mumy, and is a nod to the original series episode, It's a Good Life (1961).
The card's address included Maple Street, which is a nod to the original series episode The Monsters Are Due on Maple Street (1960).