Arrange small cauliflower florets on the serving platter to resemble ghost shapes, with some larger pieces for the bodies and smaller for floating heads.
Cut the yellow bell peppers into small rectangles or irregular shapes to serve as ghost costumes or decorative hats atop the cauliflower ghosts.
Use sliced black olives to add eyes and mouth details to the cauliflower ghosts, pressing them gently into the veggie surface.
Arrange baby carrots and cucumber sticks around the cauliflower ghosts to add color and balance, creating fun accents and stems.
If desired, add additional decorations like small slices of bell peppers or extra olives for variety and festive flair.
Sprinkle a pinch of salt over the veggies to enhance flavor, if desired, and serve immediately for a fresh and crunchy display.