The best way to do this is with Custom Options / Product Options.
This will allow you to add options that shoppers can select on the product display page. These options can be Free or Paid.
You can add options like:
- Non-physical add-ons, like extended warranties
- Personalization options for products, like adding monograms
- Extra/additional physical items
These optional add-ons are not inventoried. They're not complete Simple Products. They're just easy options that can be added to an order.
You can learn more about Customizable Options at: https://experienceleague.adobe.com/docs/commerce-admin/catalog/products/settings/settings-advanced-c...
If you need to apply these custom options to a lot of products, there are Magento Extensions that will allow you to create, apply, and update templates: https://marketplace.magento.com/mageworx-module-optiontemplatesmeta.html
Another option to consider is to use Bundled Products. You could create a bundle with all the options you'd like to offer, making some required and some optional. Shoppers could select between different checkboxes, dropdown lists, etc. This is common for selling items like PCs, where the shopper might have a checkbox for adding antivirus software, but a dropdown to select between hard drives.
You can learn more about Bundled Products at: https://experienceleague.adobe.com/docs/commerce-admin/catalog/products/types/product-create-bundle....
There are also Magento Extensions that will allow you to use Configurable Products within bundles. For example https://marketplace.magento.com/firebear-configurableproducts.html
There are also extensions that can help add more visual components to your bundled product pages, allowing shoppers to see what individual items in the bundle look like: https://marketplace.magento.com/xumulus-xumulus-advancebundles.html
Best of luck!
