Re: Customer create a (gift) box selecting products
I'm not sure if there are any extensions for your requirement, but I think this extension can help: Magento 2 Gift Card Extension by Landofcoder.
With this module, the customers on your Magento 2 store can create their own gift cards with different pricing, image, quantity, etc. Moreover, they can personalize and customize the gift card to be more eye-catching and dynamic with drag n drop features and appealing design. Once the custom-made gift card is purchased, a code and a greeting message will then immediately be sent to the receiver of the gift card.
Especially, Landofcoder is running Appreciation Weeks to all adorable customers with the hottest deals. Sale OFF 20% All Magento 2 Extensions From 20th December 2021 to 9th January 2022.
This offer is valid for a limited time period and will be applicable to everything you shop from the website.