Consider Sauerkraut....sounds weird....but, it’s cheap, and nutritious....and if you can’t get fresh veggies, it could be a lifesaver. Oh, and it lasts a LONG time, too.
I’ve been buying more canned sweet potatoes.
2 lb can for like 1.25, can’t beat it.
Very versatile. Breakfast - Dinner - don’t need any condiments. Warm, cold, mashed, just about any way you want them.
Also, one of the few veggies kids will eat and like and actually ask for more.
I started sprouting seeds about 2 months ago. They are full of nutrients and would solve that craving for something fresh in the winter. I love them and hadn’t done them in decades.