Shower caps are great for putting your (dirty and dusty) shoes in when you travel! Chances are your shoes will get quite dusty during your missions trip activities and you don't want to spread the dirt around to the rest of your suitcase contents.
Make Your Grill Non Stick Using an Onion! Simply heat up your grill and then rub the cut side of an onion over the grate! Not sure if this makes your food taste like onion. I myself LOVE onions, so that wouldn't be an issue for me.