There are several alternatives to saying "Have a nice evening" that you can use to add variety and warmth to your farewell:
- "Enjoy your evening!"
- "Wishing you a wonderful evening!"
- "May your evening be filled with joy!"
- "Have a great evening!"
- "Make the most of your evening!"
- "Hope you have a pleasant evening!"
- "Wishing you an evening filled with happiness!"
- "May your evening be relaxing and enjoyable!"
- "Enjoy the rest of your day!"
- "Have a delightful evening!"
Remember, the key is to be sincere and friendly in your well-wishes. Choose the one that feels most natural to you and suits the context of the conversation.