Updated February 2023: This works for Google campuses, as only education/business Google accounts have the appointment calendar option.
I'm not sure this is really teaching-focused, but it's something I find helpful in managing meeting with students - having an appointment calendar where they can make their own appointments. I set up appointment slots (an option when creating a new event in your campus Google calendar that is *not* available via normal Google accounts) and give students the link to my appointment page. It streamlines the back-and-forth emails with students and advisees, which is great. I've made a brief video (~4 mins) walking you through how I set up appointments, here: Setting up an Appointment Calendar.
Best wishes for a lovely, fall-like weekend!