OMG. I am in the same boat- my daughter is the same age. I panic every night trying to make sure I am packing a nutritious variety of food. Some things I have found that work below (some of which I got from Mamasource!)- but I will be watching this for some new ideas. My daughter eats a lot and is starting to refuse daytime bottles which my dr says is ok (and good as it is about time for weaning) as long as she still gets BF at morning and night and other liquid during the day. We also try to get as much breastmilk in her during the day by taking sippy cups to daycare with breastmilk). Breastmilk is offered with meals in a sippy cup or she really likes straws now as trying to get away from needing a bottle for naps.
Breakfast- various combinations of the below, and I usually take rice or Multigrain Earth's Best cereal in addition in case she refuses something and to ensure she gets iron but I am phasing the EB cereal out
cut up kiwi (my daughters favorite- you have to make sure it is sweet) and hard boiled egg yolk (vitamin c and egg yolk should be served together) and a Earth's best waffle or mini bagel or piece of toast(daycare gives her pieces from it to self feed),
or
instead of egg yolk and kiwi-- baked apple with cinnamon cut up (i put it in a pyrex with some water the night before and roast it for about 15 min)or a jar of fruit or fruit/grain baby food or other soft cut up fruit (I get bags of soft frozen fruit (peaches or mangos) and take a few out put in ziploc in fridge the night before),
I alternate the egg yolk days (every other day) with YoBaby Yogurt or cottage cheese
Lunch
I make some sort of grain cereal the night before (barley or millet or brown rice or a mix) or Earth's Best cereal (although she is starting to prefer chunkier stuff- keep trying she needs to get used to chunky stuff :) ) and try to send a orange veggie (cut up steamed carrots, or mashed sweet potato or squash etc) and a green veggie (soft green beans or peas etc) or rotate them. And a fruit (puree or small soft pieces). I put everything in a glass pyrex dish with each item separate (like a pie chart)- sometimes cheese with lunch if snack is not cheese
I also sometimes give her a juice box
Snacks cheerios and one of the small Babybel cheese rounds or other chunks of mild cheese (the day care cuts her off small pieces) or yogurt if she didn't have it for breakfast or lunch, or some toast pieces and cottage cheese, or cottage cheese and fruit
Other ideas
cooked pasta cut up in pieces, I am going to try spaghetti o's soon (they have a lot of salt though even the whole foods brand so you can't give a lot), hummus, chunky pureed leftovers from dinner the night before (I mix in some breastmilk for easy blending), small pea sized chunks of chicken, sweet potato french fries (baked),
I hope this gives you some ideas. Its soo hard to pack for daycare. I use lots of mini plastic Sassy brand containers, pyrex dishes, and zip lock bags. I also try to use foil for stuff like waffles or other things so that I am not wasting so many plastic bags.