19.  Use Banana Peels for Fertilizer

Bananas are widely known for being affordable, and they are certainly much more economical than buying fertilizer from a gardening store. To save both time and money, you can utilize leftover banana peels by burying them in your garden beneath a layer of soil. This method is effective because bananas naturally contain a significant amount of potassium, which is a key component in commercial fertilizers. The potassium from the banana peels will aid in strengthening plant stems and protecting against diseases.