Popcorn Bucket Air Cleaner
Imagine the look on this mechanics face when he opens up the hood to find an empty movie theater popcorn tub that appears to be tied using bailing wire to the air intake. This is similar to what you would see with an aftermarket air intake system from companies like K&N that are known to increase performance because of increased airflow. I wonder if the mechanic walked out with the empty tub and asked the customer if they wanted it back.