I know during the summer you are planning what your room will look like in the Fall. Since I cannot get into my room until mid-August, I like to sketch out the layout of the room and add in desks, group tables, my desk, cabinets, and space for things the kids will need often.
Then I need to plan where to put all the other things in my room.
I also sketch my desk out and try to keep that organized as well with mini-baskets and containers.
This is a cool site that I am going to try for my room. Classroom Arrangements