As an elementary school teacher I am always intersted in ways to reuse items I would normally get rid of or throw away. What are some random things you use in your classroom to guide your instruction or even just organize your space? I reuse a couple of tissue boxes. It seems that plastic grocery bags always make their way into my classroom. Instead stuffing all the bags into one bag, I stuff them into an empty kleenex box. That way they are neatly put away and I can just pull one out if a kid needs a plastic bag.