Second-hand electronic products: Many people on the leisure fish sell second-hand mobile phones, tablets, cameras and other electronic products. If you know how to evaluate the value of products and can find second-hand products with appropriate prices, you can buy them on idle fish and sell them after renovation and maintenance to earn the difference.

Collectibles and scarcity: Idle fish is also a good place to find all kinds of collectibles and scarcity. If you have a deep understanding of the collections in a certain field and can find items with unique value, you can sell them on idle fish and make a profit.