Skewers
A skewer is a simple fix for the biggest problem with feeding fresh food, which is that most of it ends up on the cage floor untouched.
Threading fruit and vegetables onto a skewer keeps it up at perch height where your bird will actually engage with it, and it turns a feed into something closer to foraging. Bainbridge, Avi One, Nature Island and Pet One supply the range in stainless and plastic.