Why it worked
The video leverages the strong visual appeal of a popular Lego set and taps into the relatable social dynamic of gift-giving among friends, creating a desire for the product through a subtle, aspirational message.
Summary
The video showcases a large Lego model of the Avengers Tower, complete with various Marvel superhero minifigures. The on-screen text suggests that if the viewer received this item, they should buy one for their best friend.
Product placement
Lego Avengers Tower: it appears as a large, detailed Lego model of the Avengers Tower, serving as the central visual element of the video. Removing it would fundamentally change the video's content. The video also features various Lego Marvel superhero figures (e.g., Batman, Spider-Man, Hulk, Thanos, Galactus) interacting with the tower, but these are incidental to the main display. The Lego brand itself is implied by the construction but not explicitly shown or mentioned as acting.