I haven't been able to find any Dragonfruit yet, but my other birds have enjoyed it before. As soon as I see some I will pick some up. She enjoys all kinds of berries and most vegetables. Some days she will eat sprouts, some days she won't. Still working on that.
Eckies are definitely different than a lot of birds in some ways, but I love them. We've only had Gillian for a short period of time but I've fallen for her- even in the midst of her hormone madness. Lucky for us the diet aspect isn't too terribly difficult, as our flock gets a variety of fresh chop daily.
She does love what we call "crunchies", i.e., pellets. I give her a little mix of the TOPS organic, additive free pellets occasionally. She's stolen pieces of Harrison's from the other birds before and she goes crazy for it. She will get a few pieces in her foraging ball from time to time to keep her occupied and as a treat but that's, it not part of her base diet. Kudos to you for being so aware of your Eckies food tolerances.