Can openers

Home Manual and electric can openers are not worth anything. They don't work when you need them to – if they are not lost -- and don't work on the size can you have in your hand. Your church kitchen, and any camp kitchen will probably have a commercial manual opener (big thing with a handle). If they don't, they need one!!! You might think about having one with a “base” (clamp) to carry with you. If you have a portable commercial opener like this you will need a 1” X 1” board to go between the clamp and the counter.
Commercial openers can quickly and easily open any size and shape of can. I still carry a home style manual opener in my “retreat boxes” just in case a kitchen should have a commercial opener but doesn't.