Leave things as you found them. This includes returning all items used to their proper places, moving desks back where they were, and generally just taking care of the room as if it were your own. Ask the teacher for a small space where you can keep items in the room if this would be beneficial. Respect the teacher s decision after you make the request. Find out if the teacher will allow you a space to display schedules, routines, and a limited amount of student work.
Some teachers have special posters with hooks that can be changed regularly.
These may be schedule related, or instructional. Respect the classroom teacher. Just get accustomed to it and keep teaching your heart out. Take advantage of getting to see how different teachers set up their rooms, display student work, etc., and take advantage of the time you spend walking around the building. Think of it as an opportunity.