I would like to get one for multiple people and multiple days.
Cost is a factor.
Small alcohol wipes are handy, too. Chances are, you'll wind up with more of that stuff than you'll use all at once in the kit. Keep in mind, too, that the most important thing is not what you have in your kit, but your willingness and ability to take action regardless of the supplies at hand. None of these steps requires sophisticated equipment. But they do require that someone take charge and take action.