My favorite Korean restaurant always gives 4 banchan to accompany the meal: Kimchi, a Potato Banchan, a Seaweed banchan and a Bean Sprout one.
Potato: Seems like it has been stewed. The potatoes are a light brown in color. Tastes little bit sweet and feels very homey.
Seaweed: Seaweed with julienned korean radish and sprinkled with sesame seed. I believe it's been mixed with white vinegar and sugar. It is predominantly sour but also a little bit sweet. Has a very nice aroma.
Bean Sprout: seems boiled and then dressed with sesame oil and maybe some other stuff. Not very sure about this one.
Could you try to make recipes for these? Thanks! :)