Wikimedia Commons has media related to Concepts.

Articles found in this category are about topics which are primarily concepts, ideas, or abstractions. In other words, they are primarily ideas, and not a physical object which can also be "thought of" or conceptualized (such as the "idea of a table").

Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.