diff --git a/migration_helpers.module b/migration_helpers.module
new file mode 100644
index 0000000..9a6f597
--- /dev/null
+++ b/migration_helpers.module
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * Entity query helper.
+ */
+function migration_helpers_entity_query($entity_type, $bundle, $field = '') {
+
+  /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
+  $entity_type_manager = \Drupal::service('entity_type.manager');
+
+  $entity_storage = $entity_type_manager->getStorage($entity_type);
+  $bundle_key = $entity_storage->getEntityType()->getKey('bundle');
+
+  $entity_query = $entity_storage->getQuery();
+  $entity_query->condition($bundle_key, $bundle);
+
+  if (!empty($field)) {
+    // Check that field BOTH is present on entity bundle AND has a value saved.
+    $entity_query->exists($field);
+  }
+
+  $entity_query->accessCheck(FALSE);
+
+  $entity_ids = $entity_query->execute();
+
+  return $entity_type_manager->getStorage($entity_type)->loadMultiple($entity_ids);
+
+}
+
+
+// The below almost serve more as examples that can be followed
+
+function migration_helpers_text_list_to_boolean($old_field_name, $new_field_name, $bundle, $entity_type = 'node', $value_map = NULL) {
+
+  $value_map = $value_map ?? [
+    'Yes' => TRUE,
+    'No' => FALSE,
+  ];
+
+  $nodes = migration_helpers_entity_query($entity_type, $bundle, $old_field_name);
+  foreach ($nodes as $node) {
+    /** @var \Drupal\node\NodeInterface $node */
+    $orig_value = trim($node->$old_field_name->value);
+    $new_value = $value_map[$orig_value] ?? (boolean) $orig_value;
+    $node->set($new_field_name, $new_value);
+    $node->save();
+  }
+}
+