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Offer a set of products, so sales increase significantly.
Does it look like a combination? Yes, it seems, but completely different. A product and its accessories are separate products, not different attributes of a product.
Does this also look like a packaged product? Yes, like too. But your customers may choose one or more, or not even choose any accessories to check. It is very flexible.
Can’t you see the differences from the built-in accessories? Ok, this is very similar, but instead of adding accessories, you can now add them to different accessory groups. This is good advice for your customers if they don’t know what to buy for.