Here are some examples:
* Devuelve el libro a la biblioteca. (Return the book to the library.)
* ¿Puedes devolverme mi teléfono, por favor? (Can you give me back my phone, please?)
* El cajero devolvió el dinero equivocado. (The cashier returned the wrong money.)
It's important to note that "devuelver" can also have other meanings depending on the context, like:
* To repay: "Devolvió el préstamo a su amigo." (He repaid the loan to his friend.)
* To send back: "La empresa devolvió el producto defectuoso." (The company sent back the defective product.)
The exact meaning of "devuelver" will be clear based on the surrounding words and context.