Toolmongerhas an excellent discussion – don’t just read the post, read the comments, Toolmonger’s  readers are an outstanding crowd – about the best ways to store and transport tools.  Box vs. Bag: How Do You Carry Your Tools?  This discussion is easily applicable to go-bags, or any emergency supplies for emergency response, evacuation, or rebuilding. The same storage principles are useful for paramedics, electricians or soldiers: if perfect, the result is the right tools for a given set of tasks, as light as possible, and easily accessible. Of course, it’s impossible to predict every possible problem – but that makes it even more useful to have sets of tools pre-arranged per task.