I also have students working in the hallway. I posted about this before but if you would like to revisit it, take a look HERE.
Finally, I feel that the most important thing I can do for my students in regards to our small space is to limit the space I need as a teacher. Do I really need a big desk? NO!
I have a computer table and my supplies are located in tins of a peg board.
Personal items? Hey, I have a closet! But . . . I use it for art supplies, snacks and the like! So instead, I put up this cute little over the door, pocket hanging thingy for those kinds of items.
By limiting 'my' space and creating 'our' space, I have been able to keep those developmentally appropriate activities that are disappearing from so many kindergarten classrooms. It's a fair trade I think. So drop me a line and tell me, what would you be willing to give up to keep your sand table?