Wintergreens

Are easy to grow Plants especially during winter to compensate the lack of fresh supplies.

Onions

And Garlic tend to shoot if they feel comfortable, showing you that they are ready to sprout a bundle of fresh and juicy scallions. All you have to do is to put the onion in the soil and moisture.
A Creative Idea is this Onion Medusa created layer by layer.

Another amazing Wintergreen is

Sprouts and Microgreens

There is a vast variety of Sprouts you can use as Alfalfa, Lentils, Radish, Mustard, Cale, Beans (not too many as they become a bit poisonous ), Pears, Amaranth....
Sow them directly in the soil , they dont need much more than a bit of light and being kept moist. You can start harvesting right away, the longer you wait the stronger the greens become in taste.