The Hunger Site is the best known charity site where a click a day triggers a donation of a cup of food to starving people that is paid for by the site’s sponsors. If you are not familiar with it, I suggest you check it out. Note the tabs for other important causes such as child health and autism. It happens that there are a few other site that work the same way. They are listed on my links page. All they cost us is a little time to help other people and the environment.
As a Benedictine, I treat daily visits to these sites as a daily discipline, a daily thing to do as are the times of prayer that I also do. It is a way to be reminded daily of the need to reach out to others.