Even without gearing, and staying within the studs-based construction system, the possibilities are really endless. Search YouTube for "creator expert" Lego timelapse videos ("speed build").
Even kids-oriented sets sometimes enjoy using advanced build techniques. You can start with "Lego 31036 speed build" as the search query to enter the rabbit hole from.
Even kids-oriented sets sometimes enjoy using advanced build techniques. You can start with "Lego 31036 speed build" as the search query to enter the rabbit hole from.