Simple trick for downloading database dump in Drupal 8 without Backup and Migrate but using Devel module.
By clicking on the link - load content by AJAX from a specific URL and display in modal CTools popup.

Sometimes, working with Drupal, reaching debug of emails that sending project. But how to do it locally? Not all server stacks (such as OpenServer and Acquia Dev Desktop) provide real mail server (as is the case with Acquia Dev Desktop and XMail) and not all packages can put mail into the folder as plain text files (as is the case with OpenServer).

How to fold a letter sent by Drupal in a folder as a text file? Quite simply, Devel module will help us.

How to create collapsible content in Drupal? It is easy! No, it really is. No more annoying additional render arrays with '#collapsible' => TRUE. Just look at this trick! It is brilliant!