Take a picture of the thing you want to give away. People can request it as soon as it's up on Do Good, and once you approve their request, their contribution will go to the charity of your choice.
You can browse Do Good to find good stuff. When you find something you want, simply press the button to donate a small amount to charity, and pick up your item afterwards.
Donate to charity
With Do Good, you pay for things by donating to charity. You get stuff you want, and you do good while doing it. It's a win-win.