This Is Our House – Michael Rosen & Bob Graham

A story about a boy named George who claims a cardboard box as his own house and declares that no one else is allowed in—not girls, not twins, not anyone with glasses. One by one, different children challenge his exclusionary rules. This picture book is a powerful and accessible exploration of sharing, inclusivity, and the problems with prejudice. It teaches a gentle lesson about how it's much more fun to play together than to keep others out.