Suggestions and ideas welcomed!

I'm having a foot surgery next week (December 7) and I want to stay in shape although I won't be able to get out and walk, bike or swim for the first month. Although there is no cast, I will wear a special surgical boot. Your suggestions or ideas of workout are welcomed! Thank you in advance.

I need for the instructor to say what spring you need for the exercises because they are just switching it up and that is very important to know