Raising money for a cause is a great idea, and since the folks on this message board are all over the globe, perhaps it would make sense to choose something that might have an international focus. And maybe there would be a way to start a TE fund for that cause (or causes) that people could make contributions to.

I'm sure there are tons of options for this, like Doctors without Borders, Oxfam, etc. And every now and then I read about a group that fixes up bikes and sends them to a developing country -- don't know of any one specifically, but something like that would be consistent with the main theme of this community.