My frequent preprocess additions

preprocess.php

/**
  * Implements template_preprocess().
  */
function theme_preprocess(&$variables) {
  /* Set variables to icon library */
  $variables['icons'] = '/themes/custom/THEME/assets/icons';
  $variables['brand_ico'] = '/themes/custom/THEME/assets/icons/brands.svg';
  $variables['light_ico'] = '/themes/custom/THEME/assets/icons/light.svg';
  $variables['regular_ico'] = '/themes/custom/THEME/assets/icons/regular.svg';
  $variables['solid_ico'] = '/themes/custom/THEME/assets/icons/solid.svg';

  /* Set variables to path & path arguments */
  $variables['path_info']['full'] = \Drupal::request()->getPathInfo();;
  $variables['path_info']['args'] = explode('/', trim($variables['path_info']['full'], '/'));
}