This was one of my first WFMW, I'm not sure it's my *best* one (read here about brownies - yum) but I still think it is the *most important*. Enjoy!
Do you have airline miles that are about to expire? Or are you changing credit cards and don't know what to do with the airline miles you have accrued (maybe the amount is too small to take a trip)? I have an idea for you!! (Sorry to sound like a commercial.)
Donate your airline miles. You may know someone who wants to take a missionary trip but doesn't have the $$$. Usually, the most expensive part of a missionary trip is the airline ticket. My husband has done mission trips using donated miles. A person from our church helped by donating miles, it wasn't enough for the whole trip but covered part of it.
Remember it never hurts to ask. I'm not sure of other organizations that would take donated miles, this is one I know of - The Centers for Apologetics Research (http://www.thecenters.org/).
Donated miles - it Works For Me!