See how one utensil makes all the difference. Take clues from these superbly done scallop ceviche for serving any appetizers on a seashell. I am inspired by the stylish way they display the seashells on a fork. This method is also practical since your guests will grab their fork at the same time.
Cut your zucchini or cucumber lengthwise to achieve a more sophisticated look. This is a simple trick to enhance how you serve your vegetable skewers. And if you lack the time to make your own, you can always buy them at Cool & Simple (or Gastronomia).