Have all the information your sub needs in one place. I have created an organized, helpful sub sheet so the sub knows what to do if there's a fire drill, where to find the remotes, which classes have an aid, where to find emergency sub plans, who the helpful students are, when to put up chairs, what to do if a student is absent, etc. Change any category to fit your classroom needs! I have one partially filled out so you have an example piece. Every August I just tweak for the new school year!