 To fasten your seatbelt, insert the metal fittings and tighten the strap. And in the event of a sudden rush of cabin generosity, your seat cushion can be used to grant wishes. How? By donating your airline miles to Make-A-Wish. Why? Because your frequent flyer account is stuffed as fat as your carry-on. And just like the workout clothes you packed, you're never going to use all those miles. But if you donate some to Make-A-Wish, you can give wishes wings and put sick kids right where you're sitting now. No, not in seats to Newark.