Why it worked
The video addresses a highly relatable, specific travel frustration and offers an immediate, low-cost, and practical solution that is easy to visualize.
Product placement
Dollar Tree: appears as the store where the product was purchased. Removing it would not change the video's core message about the utility of the hook. Closet Two Prong Over The Door Hook: acts as the product being demonstrated; it is shown in its packaging and then installed on a bathroom stall door to hold a backpack. Removing it would remove the subject of the video.