You can make “khichdi” - It is a Indian dish, but not really, it is more of a procedure - basically get anything you have (rice, pulses, any other grain, just see if they are too hard, give a wash before, and let them soak for some time), add vegies(almost anything works, my favorites are potatoes, onions, tomoto, carrots, basically whatever is available in season), add spices to taste (I mostly just add salt and pepper, but anything is fine, just add a bit more, since all stuff previously added in a taste profile sense is bland) - then cook in pressure cooker (pressure cooker is not necessary, just accelerates cooking). Depending on how much you put - this can serve you many servings. If after cooking, it is dry for you, either have it with curd or youghurt if you want something cooloing, or just add a bit of vegetable broth and warm it up. Just store it well. It is cheap, not necessarily very nutritious (it is mostly carbs, fibre, and plant protien, which is not bad, but could be better). It is easy - no culinary skills required other than knowing how to wash and cut stuff, and operating your pot.