There is an excellent aid organization out there called Mercy Ships. They run hospital ships (composed of volunteer staff) that visit Third World countries and provide simple but life-saving surgeries for disfiguring tumors, cleft lips and palates, cataracts, burns, and injuries. They provide prosthetics for adults and children injured in conflicts, and also provide dental and vision checkups for the poor in remote areas — often for the first time in their lives. It's desperately needed work, and it brings such joy to people's lives for relatively little investment. Consider supporting them on a regular basis.
Best of all, Mercy Ships is a Christian organization dedicated to serving the Lord. They belong to the Evangelical Council for Financial Accountability (a respect organization the Evangelical world) and other organizations that demonstrate their soundness.
When I see all that they do, I am excited about supporting them. It's almost like Jesus is healing like he did back in the first century!
So give them a look.