Want to help with the Oklahoma tornado aftermath?
Foundation Beyond Belief is a nice secular charity organization, who has set up shop for this particular crisis.
The Red Cross, as usual, is on the scene.
As an aside, one thing that has struck me is the phrase "They're in our thoughts and prayers". What's up with the "thoughts" part? Is that throwing a bone to the non-religious? Actually, I'd say that it's even more useless than prayer. At least with prayer, on a conceptual level, you're asking some guy who has the power to do something to help. With "thoughts", they're literally asking you to sit around, stare into space, and think about the problem.
Fuck that - donate - do something that actually does something.