diff --git a/src/Controller/OverviewController.php b/src/Controller/OverviewController.php
index b8e38e1..f45d004 100644
--- a/src/Controller/OverviewController.php
+++ b/src/Controller/OverviewController.php
@@ -3,6 +3,8 @@
 namespace Drupal\paragraphs_collection\Controller;
 
 use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Entity\ContentEntityInterface;
+use Drupal\node\Entity\Node;
 use Drupal\paragraphs\Entity\Paragraph;
 use Drupal\paragraphs\Entity\ParagraphsType;
 use Drupal\paragraphs_collection\GridLayoutDiscoveryInterface;
@@ -145,6 +147,73 @@ class OverviewController extends ControllerBase {
 
     return $this->paragraphsTypesLayoutEnabled;
   }
+
+  /**
+   * Finds all Paragraphs which use a particular grid layout behaviour.
+   *
+   * @param string $grid_layout
+   *   The machine name of the grid layout.
+   * @return array
+   *   Array of IDs of Paragraphs that use the grid layout.
+   */
+  public function getParagraphsPerLayout($grid_layout) {
+    $paragraphs_enabled = $this->getParagraphsLayoutEnabled();
+
+    $paragraphs = [];
+    foreach ($paragraphs_enabled as $paragraph => $used_layout) {
+      if ($grid_layout == $used_layout) {
+        $paragraphs[] = $paragraph;
+      }
+    }
+
+    return $paragraphs;
+  }
+
+  /**
+   * Finds all Paragraphs Types which allow a particular grid layout behaviour.
+   *
+   * @param string $grid_layout
+   *   The machine name of the grid layout.
+   * @return array
+   *   Array of IDs of Paragraphs Types that use the grid layout.
+   */
+  public function getParagraphsTypesPerLayout($grid_layout) {
+    $paragraphs_types_enabled = $this->getParagraphsTypesLayoutEnabled();
+
+    $paragraphs_types = [];
+    foreach ($paragraphs_types_enabled as $paragraphs_type => $enabled_layouts) {
+      if ($enabled_layouts == [] || in_array($grid_layout, $enabled_layouts)) {
+        $paragraphs_types[] = $paragraphs_type;
+      }
+    }
+
+    return $paragraphs_types;
+  }
+
+  /**
+   * Finds the node using a Paragraph.
+   *
+   * @param Paragraph $paragraph
+   *   The Paragraph entity.
+   * @return Node|null
+   *   The node using the Paragraph. NULL if there are unexpected content types
+   *   or missing ancestors in the hierarchy of references.
+   */
+  public static function nodeUsingParagraph(Paragraph $paragraph) {
+    /** @var  $parent ContentEntityInterface */
+    $parent = $paragraph->getParentEntity();
+    $parent_type_id = $parent ? $parent->getEntityTypeId() : NULL;
+    if ($parent_type_id == 'node') {
+      /** @var $parent Node */
+      return $parent;
+    }
+    if ($parent_type_id == 'paragraph' ) {
+      /** @var  $parent Paragraph */
+      return static::nodeUsingParagraph($parent);
+    }
+    return NULL;
+  }
+
   /**
    * Generates an overview page of available grid layouts.
    *