Camera accessories have expanded well beyond the basics of a strap and a bag, now spanning categories like modular filter systems, portable lighting, and storage solutions built specifically around modern mirrorless bodies.
The main categories
Broadly, camera accessories fall into a few groups: support gear (tripods, stabilizers), light-shaping tools (filters, reflectors, small portable lights), and storage and transport gear (bags, cases, memory management tools).
What to consider before buying
As with any equipment purchase, it's worth considering how often a given accessory will actually be used relative to its cost and the extra weight it adds to a kit. Researching build quality and compatibility with your specific camera system from multiple sources before buying is generally recommended.