You’ll always have the floor
A teacher at my studio sometimes talks about the ground. She’s talks about in reference to putting you weight evenly on your feet, or letting it support you in savasana. She has mentioned that no matter where you are, you’ll have the ground. You may not have your mat, water, or a mirror- but you’ll always have the floor. You should have a relationship with the floor. You should know how it feels. It will always be there for you and hold you up!