I found some short snippets of code to set the alt text of images – when the image is uploaded, added to the editor and used as a post thumbnail. I simply combined them into one file.
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Add info to WooCommerce order emails
Add a custom note to your WooCommerce emails. Use actions instead of changing templates. It can be simple or complex.
Simple Maintenance Mode
A very simple maintenance mode plugin for very short maintenance times.
Customise “Choose an option” dropdown item
Make the variation dropdowns user friendly by changing “Choose an option” to use the attribute name and be more clear.
Set max or min cart weight
Set an upper or lower weight limit for the shopping cart and prevent checkout.
Add CSS classes to post meta
Add CSS classes to post categories to allow for styling them.