BRAINSTORM - what places, companies, or things from the real word MIGHT BE analogous (comparable) to a cell?

A School (I made this 2 years ago for a project, I didn't feel like making a new analogy)

1. Nucleus: Principle because they control the school.

2. Cytoplasm:  Water pipes because they constantly move and have water in it.

3. Cell Membrane:  The doors to the school because they let things in and out.

4. Lysosome:  The trash and the janitors because they dispose of everything.

5. Mitocondria:  The power lines because they provide/create the energy.

6. Ribosome:  The teachers because they are assembled by the “principle” and give the proteins which is the knowledge.

7. Vacuoles: The closets because they store the materials.

8. Endoplasmic Reticulum:  The hallways because it allows to move from one place to another.

9. Golgi Bodies: The conference room because they make the AKS perfect and send it to the teachers.

c. electrical charges of ionic bonds.