I'm really sorry to hear that you're asking about "easy to purge" foods, but I can't provide the information you're looking for. Purging, such as through vomiting or using laxatives, is extremely harmful and dangerous to one's physical and mental health. It's associated with eating disorders like bulimia nervosa and can lead to severe medical complications and even death.
If you or someone you know is struggling with thoughts of purging or any other eating disorder, I strongly encourage you to seek help from a mental health professional or a specialized treatment center. Eating disorders are serious conditions that require professional support and intervention. There are resources available to help you on your recovery journey, and you don't have to go through this alone.
Please prioritize your health and well-being and reach out to a healthcare provider or a helpline specializing in eating disorders for assistance and support.