Essential items include sufficient water and snacks for your entire visit, as nothing is available for purchase on the island. Sturdy, closed-toe footwear is crucial for navigating uneven terrain, broken pavement, and debris. A fully charged mobile phone, portable battery pack, and basic first aid supplies are recommended for safety. Sunscreen, hat, and weather-appropriate clothing are important since there's limited shelter. Consider bringing a camera, as the island offers unique photographic opportunities, but always prioritize safety over getting shots in dangerous areas.