Lovely Craft Piston Trap 30
The most "lovely" way to activate this trap is a . Why? Because the Heavy plate counts entities. If a chicken walks on it, nothing happens. If a zombie or player (weighing more than 1 entity) steps on it, the plate sends a signal.
When paired with an Observer block or a Sculk Sensor, the LC-30 can be configured to activate without a physical pressure plate, eliminating the tell-tale "click" that warns savvy players of danger. lovely craft piston trap 30