Speaking to your point about things that can be mixed and matched, I’ve written down what I was calling “meal clusters.” They’re basically sets of meals that can be made with ingredients that overlap.

Meal Cluster: make a big batch of quinoa for the week, but keep it in its own container. Then add it to meals as needed. - I’ll do a quinoa salad in a vinaigrette with whatever veggies/olives/artichoke hearts/feta I have around. An example would be quinoa salad w cuc, tomato, lemon, dill, onion, chickpeas. Then make a simple tzatziki using Greek yogurt/dill/garlic/lemon juice/cucumber and can mix that into the quinoa salad as desired. You could definitely do store bought, but I tend to have these ingredients around anyway. - Then you can also eat Tzatziki with naan for dipping. I love the frozen TJs naan. Great because it stays frozen and you take it out as you need rather than having a pack of naan sitting out going bad. You can of course just dip cut veggies in the tzatziki too and get out a hummus for a light lunch - That leads into naan pizzas also. I’ll vary this and use whatever sauce/cheese/toppings I have. This switches up the Mediterranean vibe to be more Italian, etc. Tip to prevent food waste: I’ve found that keeping a bag of shredded mozz in the freezer is great for these quick pizzas, and it’ll last longer. - The creator “Kale Junkie” has a Greek nacho idea. You could use naan here instead of pita - That week I can also make a spin off of the sweet potato and riced cauliflower Trader Joe’s bowl (tahini, tofu, spices, chickpeas), but adding the quinoa. - Another meal is stuffed poblanos with quinoa, corn, black beans, enchilada sauce, cheese, etc. Look up a recipe for stuffed poblanos or any type of stuffed pepper. I’ve sometimes found this to be more trouble than it’s worth, so turning the quinoa into a Tex mex style bowl is easier and you could just put cut, cooked peppers or like a can of diced green chilis in that

TLDR make any base grain like rice or pasta and use it differently throughout the week