We got both our CAG (29 y/o) and WCP (27 y/o) right after they were weaned, and started them both on people food with some of that baby bird food powder goop mixed in, but they quickly adapted to just people food. Initially, they were ravenous, as growing baby birds are, and I was astounded at how much they ate. So; Hamburgers, hot dogs, chicken, PBJ sandwiches, pizza, lasagna, spaghetti, salads, apples, oranges, green grapes (for some reason, they won't eat the red or purple ones), pears, scrambled eggs (sometimes with peppers, ham, and cheese); corn, green beans, kidney beans, beets, carrots, noodles Romanoff, Stroganoff, potato soup, tomato soup, cheese soup, various noodle soups, pineapple, cake, twinkies, you name it, they get it. The only things I don't feed them are onions, avocado, and anything with theobromines in it (chocolate, coffee, etc), alcohol, or fizzy soda type stuff. Beyond that, there's always a mix of the large size Pretty bird, Kaytee, and Zupreeme fruit colored pellets in their cage bowl if they get hungry outside of meal times, and I might add a few of LaFeber's nutriberries (alternating types daily) to the mix so they don't get bored. I usually put the fruit on those hangers that pierce the chunk of fruit, but will occasionally give them canned fruit salad if I can't get fresh stuff (this has usually been during winter, when I just get lazy and don't want to leave the house in the cold, but that will change while I'm staying in Arizona).
When I was married, my wife was allergic to dust, so we always had a hepa filter running, and I've continued that practice. I have a Honeywell 64500 cylindrical hepa filter between the cages which blows down onto the floor, set onto a 24 hour timer which turns on at dawn and off at dusk (there's a radio attached too, so they always have music playing while awake). It's timing also tells the birds when it's time to go back to their cages to go to sleep. The filter keeps the dust down.
Occasionally, they will get a Reeses Pieces as a treat. I know, I know, all that sugar isn't great, but hey, they're doing well, haven't been sick, feathers are all shiny and nice, so it all seems to work. Questions?