Have some old keys in your junk drawer? Did you know you can use them to help the homeless? The Giving Keys, a nonprofit based in Los Angeles, works with homeless people and trains them to make jewelry out of old keys. The keys are upcycled into rings, pendants, bracelets and more. The workers earn an income, and it helps them get off the streets and back on their feet. To learn how to donate your keys, or to shop the collection, visit thegivingkeys.com.

Did you know that baking soda can expire? One way to test it is to simply spoon a little bit into a glass filled with white vinegar. If it fizzes, it's still active. If not, it's dead. But there's no need to toss it into the trash. There are lots of uses for baking soda around the house. You can use it as an all-natural abrasive on tough-to-clean areas like a stovetop. But one tip that's key for pet owners? Use it to neutralize accidents. If your dog or cat accidentally relieves itself on your hardwood floor, wipe up the urine, then sprinkle baking soda on top. It will absorb it and neutralize the acidity to prevent damage to your floors.

For much of the country, last winter was one for the record books. With spring here, take the time to give your car a thorough wash. At the automatic car wash, pay for the additional undercarriage wash option. During the winter months, deicing salts and grime can build up under the car. Left untreated, this can lead to corrosion or rust on your undercarriage. By thoroughly washing it off, you can prevent this damage to your car. Also, take an old toothbrush and brush off the white powdery residue on your car's battery. This is corrosion caused by winter weather. A dirty battery can prevent your car from starting.