The 'third date rule' is largely fictional. People's feelings and readiness for intimacy vary greatly and can't be tied to a specific number of dates. It's more about the connection and comfort between two individuals.
One idea could be that Naruto takes Hinata to a beautiful flower field for their date. They could have a picnic there, with Hinata shyly sharing her homemade onigiri with Naruto. As they sit on the soft grass, Naruto might tell Hinata some of his adventures outside the village, making her eyes shine with admiration.
Another idea is a cooking class date. They sign up for a cooking class together, learn how to make a new dish like a foreign cuisine. They have fun cooking side by side, and at the end, they get to enjoy the meal they prepared together.
A cooking class together can be both fun and romantic. You can learn to make a new cuisine, laugh at each other's cooking mistakes and at the end, enjoy the meal you've created. It gives you a chance to bond over a shared activity and learn something new at the same time.
You could take her stargazing. Find a quiet place away from the city lights, bring a blanket and some hot chocolate. It's very romantic. A cooking class together is also a good idea. You'll have a great time learning new recipes and working as a team. Or how about a day trip to a nearby beach? You can swim, sunbathe and build sandcastles if you want a more laid - back date.
A picnic in the park can be a great date idea. You can prepare some delicious sandwiches, fruits, and a bottle of wine. Enjoy the fresh air and the beautiful scenery while chatting and having a good time together.