From Northern Parrots
Parrot toys are essential to keep your bird happy, alert and occupied. In the wild, Parrots spend their time foraging for food, finding nesting sites and shelter, avoiding predators (man mainly) and other challenging activities.
It is our duty to provide enough variety of Parrot toys to keep them entertained and interested every day. Wouldn't you get bored of just the same old toy for months on end?
As well as natural branches (clean them thoroughly first though) provide a selection of toys for chewing.