The Gama-Gama no mi: Model Toad. It has Zoan and paramecia type properties. It allows the user to use venom or transform into a toad, which gives them 2X durability and a huge boost to jumping. There is a hybrid form too. The only downside to the fruit in general is that it does not allow you to use any kind of haki, which is crucial to defeating most logia-type devil fruit powers.