Get permission slips filled out and signed by parents
Right now our parents have to fill out the same information ten or more times per year. If there were a way to get their information and a "fresh" signature somehow then that would save an enormous amount of time and energy for parents and teachers.
Old wine in new wineskins. A better idea is to do what some schools already which is to use a single blanket permission form at the start of the year, and allow parents to opt out of specific activities.