Hello there,  @rcpete5_1  Welcome to the Canvas Community.  Thank you for posting your question.  Here is a Guide for you to look at: How do I add a course in an account as an admin?.  You can name the sandbox courses whatever you want.  For example, we give each of our faculty their own sandbox course to play around in or build content.  We put their last name and first initial of their first name as the course title.

I hope this helps, Robin.  Sing out if you have any questions.  Be well...stay safe.