15. Hazy car headlights? Use toothpaste to restore it and make it as good as new. Simply scrub it down with toothpaste and rinse it off with water and wipe it with a rag. Note: This hack is not for glass headlights since toothpaste is abrasive.
16. Smelly dorm? Try taping a dryer sheet over a turned on AC. The dryer sheet also works as replacement filters for old vacuums and trash can deodorizer.