mdjekic

If you are extending WooCommerce by creating themes or developing plugins you will find this plugin to be priceless!
WooCommerce uses WordPress logic and database tables to store data on store items, orders, checkouts… 
If you are integrating a payment gateway or any 3rd party app with your store, you sometimes need to 
store some extra data for specific orders. It tends to be very hard or even impossible to extend orders 
with custom data.
<h4>Extend WC Orders</h4>
Here’s how easy it is to extend a WooCommerce order in your code:
| WC_CustomOrderData::extend($order);
To set a custom property to an order, just type:
| $order->custom->your_custom_property = ‘some value’;
After that you can use your custom order property by referring the “custom” order property:
| $custom_property = $order->custom->your_custom_property;
You can allways check if a custom order property exists using the standard PHP way:
| if(isset($order->custom->your_custom_property)) { doStuff(); }
All custom order properties are saved in a separate database table. When you finish working with the order, 
make sure you save custom data by typing:
| $order->custom->save();
Note: Storred objects and arrays will be restored as arrays.
<h4>Author</h4>
<a href="http://milos.djekic.net" rel="nofollow ugc">Miloš Đekić</a> is a software enthusiast from Belgrade, 
Serbia. He loves to create useful software.

WooCommerce Custom Order Data

Extend WC orders with practically any custom data by writing just one line of code and use it wherever you need.

CI II ApS

This plugin helps you on your journey to become compliant with GDPR using a free cookie pop-up, consent log, and more.
Did you know? If you own a business website, you’ll need to comply with additional regulations to avoid huge fines and eliminate uncertainty.
You can try Cookie Information’s business features for free for 30 days.
Get immediate access to: 
– Helping you become compliant with global privacy regulations (GDPR, ePrivacy, and CCPA) 
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– A powerful cookie scanner that immediately notifies you when one of your webpages is illegally tracking and saving private data

Cookie Information | Free GDPR Consent Solution

This plugin was simple and to the point.
Now it's been taken over and turned into a marketing tool for a premium solution.

It's perfectly fine to have a premium solution, but please, don't bloat all pages with advertising about it..
IMO, this is not the way to market a paid solution in an open source community.

UPDATE:
Since the latest versions it even requires you to provide your details, otherwise it wont work.
I'm reporting this plugin.

Too bad it's turned into a marketing tool

Get your website’s consent foundation in place with our free cookie pop-up (GDPR, ePrivacy, and CCPA).

WooCommerce Custom Order Data vs Cookie Information | Free GDPR Consent Solution