>>723406293
Don't be afraid to build your dungeon around a gimmick. My best DnD dungeon memory was about an Electrified Metal Maze dungeon, everyone inside the dungeon had to be attached to a gold wire, which were spooled around certain parts of the dungeon or start taking 5d8 Lightning damage per round.
The players had to find a way to wrap the wire around them, then not let it get snagged, it also worked as a waymarker in the Maze, and enemies were also dragging their own wires behind them, so you could follow them and you could just cut or snatch away their wires in combat.
Mage Hand and Unseen Servant were surprisingly useful spells in dragging extra safety wires.