Watering the AC
Kids don’t often realize the consequences of their actions before they act on them. They get so curious about how something will look, feel, or sound that they don’t have time to consider that something might go wrong or get broken if they play with it.
Outdoor AC units can be rather enticing to kids to experiment with, but also pretty dangerous. The loud fan with openings on nearly every side of it. One kid broke their AC unit by pouring water into the vent. They only wanted to clean it and listen to the sound it made as it came to its end.