The easiest microgreens: lentil and mung bean sprouts
No egg, no problem. Legume sprouts gives you not only vitamin C, antioxidants, and fibers, but also proteins all year round.
You only need a couple of medium sized mason jars. I bought some stainless steel filters for draining the water. You only need two large table spoons of lentils or mung beans. Soak them in water for 24 hours in a kitchen cabinet. Remove the water. Wash your beans twice a day thoroughly. Voila. You have a full jar of bean sprouts in less than a week.