I started with bananas. Since they are so soft, I thought they would work well to get Abbey used to the feeder. WARNING - they are VERY messy! Lesson learned - never serve her bananas without a bib on.
I then moved on to apples a few days later. They kept her busy for quite some time while Mike and I ate dinner. (Note the appearance of a bib this time. See, I'm a quick learner.)