Place a small, shallow bowl at the top of a large platter or rimmed baking sheet. Construct a skeleton with vegetables as follows: Use sugar snap peas to create arms, placing tomatoes at elbow and shoulder joints. Add broccoli florets to the ends for hands. Make ribs with yellow and red bell peppers and use celery for the spine. Construct a pelvis with cucumber slices, then fill in the rest of the tray with any extra vegetables. Stack the vegetables as needed to fit on the tray. Fill the bowl with ranch dressing. Arrange lettuce leaves around the outside of the dressing for hair and place olives on the dressing for eyes.