I would try and get them on a high quality pelleted diet as a staple and not a seed diet this is more of a treat. Harrison's and Totally organic pellets are two brands I really like. You should also feed vegetables, fruits, cooked grains, and sprouts daily in addition to the pellets.
Here is a good link over feeding parrots http://www.avianenrichment.com/diet.htm
For toys it will be different for each bird you will have to try out different ones and see what yours will like.
Here is a good link over feeding parrots http://www.avianenrichment.com/diet.htm
For toys it will be different for each bird you will have to try out different ones and see what yours will like.