I gave mine 2 CDs tied on the end of a raffia cord - they ignored them.
I gave mine an apple cut in quarters, they only pecked at the apple once and ignored it.
They love to play with the hutch door by jumping up to perch on it and then fly down to the ground again.
They are happy to peck at sweet corn, eating up the corn and leaving the core in just one day.
They love the game - see who is strong enough to overturn the water drinker.
They love the game of 'hide the egg and let the human look high and low for it'.
One of them loves the game of jumping and landing on the human's back and shoulder when she comes with the food for all of them.