Cafe Sopeso. I just read an amazing little story about giving back. You order a coffee to go and one "suspended." You pay for both, take yours and then at some point a hurting person will enter the cafe, ask if they have any suspended warm drinks and just that easy, you have sprinkled some fairy dust and met a need.
You can also suspend a sandwhich or a meal if you have the means.
It started in Italy, here is the link to the story: