We do a rough plan week by week and take advantage of Tesco's free click and collect service. I've never had cause for complaint about the quality of food picked, touch wood. Either DH or I will pick it up ok our way home from work, either Thursday or Friday.
We have similar things each week but sometimes try a more adventurous recipe at the weekend when we have a little more time to faff about in the kitchen.
Usual suspects for dinner include homemade pizzas (we often use a tortilla wrap as a base for ease) turkey burgers, chicken fajitas, frittata, pan-fried chicken or fish with potatoes/rice/couscous, pasta, salads (trying to hold onto summer!)
The DC eat mostly the same, bar the fish. They also like sausages and mash, spag Bol, mild chilli con carne, fish fingers, pasta with pesto, macaroni cheese, lasagne. I sometimes batch cook the chilli/lasagne/spag Bol so I can cook from frozen and don't lose my head after work/school.
We do utilise our freezer a lot so if we buy something and don't fancy it as planned, I'm quite vigilant about checking use by dates of stuff in the fridge, so we don't usually waste too much.
Breakfasts are usually cereal, crumpets or toast, and I may sometimes make a smoothie for DC if I'm not running around like a blue-arsed fly.
At weekends it's a bit more relaxed so we have scrambled egg, sometimes pancakes.
Good luck with the meal planning!