other good options include metal cocktail skewers, chopsticks, rosemary stalks, or even toothpicks. What is a good substitute for mozzarella in caprese? You'll want to use another fairly mild cheese ...

Repeat to make eight skewers in total. If the rosemary stick is not easy to push through, then just get a skewer and push that through first to make the holes, then pull it out and push the prawns on.