Parakeets are nice little birds. I think they need more than seeds to eat, though. My friend who kept them always had parakeet pellets they ate. She kept a millet spray in the cage, along with a cuttlebone, for calcium. You have to keep the water changed out too, because birds are not neat, and will flip things into their water bowls.
She always had a toy or two in his cage, and he loved to ring a little bell on the end of one of the toys. He always looked so pleased with himself when he would hit that bell. He was a very sweet, sociable bird.