There is one great advantage to being on a cart. Every year I end up moving my "home base," and every year I get to organize all my stuff again. Books on a bookshelf. Reorder my file cabinet. This year I got to buy new colored pencils. Is there anything better than a box of new, sharpened colored pencils?! I didn't think so. And look at that whiteboard. I love clean & empty boards. Just think of all the learning that will be written there in the next 9 months!