Slice the top of the apples and keep it as a lid. Using a melon baller or spoon, carefully scoop out the flesh of the apples, making sure to leave the wall about 1/4 inch thick.
Chop the scooped-out apples. In a bowl, add the apples, grapes, avocado, cheese, and berries. Drizzle apple cider vinegar and honey and toss till well coated.
Carefully spoon the fruits back into the apple cups. Optional, drizzle a bit more honey on top.