I love using Canvas for when I am going to be out of school. Students know how to easily access Canvas, so they can find the assignments. Students are also easily able to communicate with me if they have any issues throughout the day.
I usually create a page with videos for students to watch, and links for students to practice the topic -- since I am a math teacher. Then I create a short quiz to assess students level of understanding. These quiz grades are a great way for me to determine how well the students understood the content even though I was not at school
I am curious what are some of the ways you have used Canvas while you are absent?