Instead of throwing away your coffee grounds, you can reuse them.
When going fishing, instead of putting your worms in dirt, keep them happy in moist coffee grounds.
If your drains are backed up or just draining slow, flush some grounds down the drain and let the abrasive action do the cleaning (not recommended for septic systems).
Sprinkle coffee grounds around your plants before watering. This will slowly release nitrogen into your plants. Add some orange peels to the grounds to keep kitty from using your plants as a litter box.
Use coffee grounds as a cellulite reducer. Mix 1 tablespoon of olive oil to 1/4 cup warm coffee grounds. Apply the mixture to your "problem areas" then wrap with plastic wrap. Leave on for several minutes then remove and brush off any loose grounds. Take a warm shower. For best results do this twice a week.
Hate dust from your fireplace. Before you clean it out sprinkle wet coffee grounds on the ash. This will help reduce the amount of dust.
After giving your dog a bath, rub him down with grounds, be sure to get all the way to the skin. Not only will the fleas take off, but your dog's coat will be softer.
Add lots of grounds to hot water (like making a big pot off coffee), and you can make a brown dye to use on fabrics, easter eggs, paper and other crafts.
Rub coffee grounds in your hands to remove strong cooking smells such as garlic, onions and fish.
Grounds can be used as a scouring agent on greasy pot and pans, as well as other objects.