If you would like to test things out or create content in an empty course that does not have any students in it, do not hesitate to request a sandbox shell where you can start designing your next course or just experiment with Canvas. When you email Garrett Collins, please include course information, if applicable, in your request (e.g., ENGL 400 Literature and Ethics).
See this blog post on "Alternative Assessments in Canvas" for a great rundown of alternatives for various assignment types, including journals, video & audio responses, collaborative writing, peer reviews, and more. Please note that some of the tools recommended are ones that live outside of Canvas, and some are tools Guilfors does not have access to in its Canvas instance.
You can make adjustments in Canvas to allow for unexpected changes to due dates or to the course calendar.
This page from Rutgers discusses some of the drawbacks of proctored exams in an online/remote teaching environment, and offers some suggestions of helpful alternatives, listed below. The page also links to a presentation by Karen Harris of Rutgers’ Teaching and Learning With Technology, which outlines the options in more detail: