Double the efficiency, double the smell.
Instructables user hanlin_y did the math and realized that alkaline batteries are one of the most expensive forms of power that consumers can use. So he/she/it came up with a solution to power your parts even if they don't come with an AC adapter. With a wall plug, wires, and bamboo strips you can run your electronics off the grid; saving money and the environment at the same time.
From the submitter:
Bagger broke? There, I fixed it. This leaf scoop solves the problem with leaves piling up in front of the mower deck and pushes the bulk to the curb. Though it will shove your leaves to the curb, you don't want to use this on a busy road because you will certainly get a few strange looks.