Longer than a foot (13 inches high x about 3 inches wide) the Mangrove bird toy from Prevue Pet will make a great addition to your bird's collection of foraging toys. Pear link included for EZ bird cage install.
Every birdcage should have at least 10 toys in the top one third of the cage. This allows for foraging activities and provides security much like the leaves of the tree the bird may live on in the wild.
Remember as your bird destroys a toy you can easily rebuild with the addition of new rope