I have recently become a member of the Engineers Without Borders organisation. I really do believe that helping out should be a major part of life. There are many organisations out there who are really helping in the fight to make the world a better place, unfortunately most of them are religious organisations trying to push their beliefs on others. It is this reason that I have joined EWB. It is to try to help those in need, while respecting their rights. EWB is an organisation which looks at the problem and comes up with a solution, without the strings attached.
For all of my other recently graduated chemical engineering friends, please take the time to sign up as a member, or even just have a look at the site and see what kinds of things they do.