2 words on the word search puzzle read out KLONDIKE and GOLDEN SUNS, referencing stuff that had a plot in the original DuckTales (1987), the former was also featured in a later episode of the DuckTales (2017) Reboot. Other words read out GLASCOW (Scrooge's birthplace), MONEYBIN, TOUGHIES, SMARTIES, GOLD, DISMALDOWNS, MONEYBIN, CLANMCDUCK (based off Scrooge's family), DIME, SHOESHINER (based on how Scrooge was once a Shoe Shiner), YUKON (based off the Carl Barks comic "North of the Yukon), and BARKS (based off Carl Barks himself), all of which tie in with Scrooge and his history.
The electrical system in McDuck Manor is labelled "DT-87", after the year that the Original DuckTales (1987) premiered.
Huey, whilst hiding in the armour, does an impression of Scrooge's voice, which he also did in Dinosaur Ducks (1987) to Webby while he and his brothers were stowing away in a container to be taken on an adventure they were forbidden from going on.
Dewey in his outfit carries a similar keytar to what the titular character of Randy Cunningham: 9th Grade Ninja (2012) uses. Both characters are voiced by Ben Schwartz.