I contributed Drupal patches
I contributed Drupal modules
I contributed Drupal themes
I contributed Drupal installation profiles
I contributed to Drupal issue queues
I contributed to Drupal.org
I contributed Drupal documentation
I contributed Drupal translations
I helped organize DrupalCon
I contributed Automated tests
I reviewed Project applications
I help in the Drupal support forums
I provide Drupal-related services
I give support on IRC
I help mentor new contributors