Colleague takes my supplies

I comment regularly but rarely post. I just want to vent about another teacher being inconsiderate. I am in a temporary classroom because a storm damaged my classroom. I teach computers. Been like this for six weeks. Yesterday, I arrive to my third period class to find that the chromebooks have been removed from my classroom. Another teacher 'checked them out'. We use Outlook Calendar to reserve the carts, and since I hadn't reserved the one for my temporary classroom he just took it, not even a courtesy email.

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I clarified with him in email that he knew it was my classroom and he knew my subject matter was computers. My only conclusion is that he didn't want to go to any extra effort to look out for a fellow teacher. I literally lost my entire classroom and am teaching a modified curriculum. Then he comes into my classroom and takes supplies he knows I need.

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I can't think of how to express this feeling to him without coming off as whiny, passive-aggressive or confrontational. I don't want to say what he did was right, even if he did follow procedures, because we teach our students to be kind, not just correct.