Students will gather items they can find in nature to put as parts in a cell. The catch is that students must explain why that item represents the cell organelle by using metaphors, similes, or other explanations. Prerequisite: Students must have a firm understanding of cell parts and functions. This lesson would be great as a unit wrap-up lesson. An example would be that an acorn could represent a vesicle because it transports seeds to other places in a protective casing like a vesicle transports proteins in a cell.