realia

Objects, such as coins, household items, or natural specimens, that are included in a collection primarily composed of documentary materials, as in a library.

Objects drawn from real life that are used in classroom instruction.

Images or illustrations that represent such objects, especially in a textbook.

Real things or facts, especially in contrast to interpretations or idealized representations of them.

Objects from real life or from the real world, as opposed to theoretical constructs or fabricated examples.