Since the island will be used for preparing and serving ice cream sundaes, it's important to choose durable and easy-to-clean materials. Opt for countertops made of materials like quartz or granite, which are resistant to stains and scratches. Consider using tiles or laminate for the flooring, as they are easy to clean and maintain. Additionally, choose materials for the ice cream sundae bar that are resistant to moisture and can withstand frequent use.