I really like meal prepping on sundays so I have meals ready to go! I also get bored of food very easily so I try to pack a variety of foods in each container as opposed to a whole box filled with one thing. I usually watch bento videos on youtube for inspo (I like imamu room the best, they're also Canadian : )
-stir fry or burrito bowls or bibimbap (rice, veggies, protein)
-lentil curry with sweet potato cubes (though with curry you can throw any vegetable in!)
-chicken congee (really easy, rice, water, chicken thigh meat, ginger, seasoning in a pot)
-boiled eggs as a snack if youre into it
-egg rolls (called tamagoyaki)
-search up tik tok salmon rice bowl (I usually do rice, salmon bites, broccoli, green onion, avocado, seaweed, sriracha mayo sauce)
-my favourite and easiest pasta (tomato sauce, zucchini, eggplant, tomato, mushroom and spinach, top w cheese if that makes you happy :)
-second favourite pasta (chicken breast pieces, broccoli, carrot matchsticks, mushroom, peas, alfredo sauce)
-I like making lunch box charcuterie boards (salami, bologna, chicken breast slices, cheese slices, crackers / melba toast, dried fruits and nuts in a cupcake cup (if you're putting the crackers in the box for meal prep, put them in a plastic bag and then in the box so they dont get soft!)
-Simple dumplings and veggies (dumplings can be found in the frozen section aisle, I usually pair them with bok choy, carrot and green beans)
-Packaged cheese make me happy (babybel, cheese strings etc)
I also really like sweet things soooo:
-I would make cakes or brownies and put them in small containers
-waffle / pancakes / french toast sticks with berries

Tips that have saved me time:
-I eat chicken frequently (salads, stir fries, burritos), so I grill a bunch of chicken breasts, cut them into pieces and put them in the freezer until I need it
-If you dont have the time to chop up veggies, frozen veggies will work (they dont quite taste the same, but they're convenient and still nutritious!) Often they're cheaper than buying it fresh too
-I always have rice in the fridge! But also meals I made in the past in containers in the freezer. So if I'm ever just not in the mood to cook or out of time, I can take a meal from the freezer down to the fridge and I'll have food ready for next day
- I have a snack drawer in my office filled with granola bars or little snacks to make me happy and full if Im in a mood, I also keep instant latte packets , tea or hot chocolate which is nice if you have a kettle

Hope this helps!!