It depends where you are and what you want a survival kit to do. For me, as you can see from the tin I am basing my hiking kit around I want to be able to boil water and will carry the makings for a brew. The thing is I need a phone signal, duck tape, a bandanna and ways to keep warm in the UK for what I do at the moment. Anything else is gravy.Should a brew kit be part of the survival tin.
ie if the tin was a trangia billy ( as ive mentioned in many previous posts...oops, forgetting what I post)
The point of a survival kit for me is it should be the first thing in every bag so you always have one on you when traveling.