Which tool can help stop the tail rotor from spinning aside from a broom?

Utilizing a fresh water stream can be an effective method to stop the tail rotor from spinning because the water may create sufficient drag as it contacts the rotor blades, providing resistance that slows the rotation. This method is particularly useful in certain operational contexts, where safety measures must be observed, and traditional tools like a broom might not be advisable.

Other options like an air compressor, high-pressure hose, or hand towel would not have the same effect as water. An air compressor might actually increase the rotor's speed due to the force of air being directed at the blades, while a high-pressure hose might not provide the necessary control or consistent force needed to stop the rotor safely. A hand towel is insufficient for stopping the tail rotor and wouldn’t provide any meaningful resistance due to its size and material.