Green onions. The main thing is that the water barely touches the roots of the plant, and then it will constantly delight you with fresh feathers. It should be changed at least once every 3 days.
Basil. And this spicy herb gets along well in water, even if you just put a store-bought bunch in a glass.
Mint. This greenery quickly takes root in a cup and can live for a long time simply in water without soil.