Make a dehumidifier
A humid closet, attic, or basement can wreak havoc on your health as well as your clothes. Get rid of all that humidity with several home-made dehumidifiers. To make one, just put some charcoal briquettes in a coffee can, punch a few holes in the lid, and place in the humid areas. Replace the charcoal every few months.
Keep root water fresh
Put a piece of charcoal in the water when you’re rooting plant cuttings. The charcoal will keep the water fresh.
Keep books mold-free
Professional librarians use charcoal to get rid of musty odors on old books. You can do the same. If your bookcase has glass doors, it may provide a damp environment that can cause must and mold. A piece of charcoal or two placed inside will help keep the books dry and mold-free.