A couple EU4 events for later

event ideagroups.414 - 'They See The Light' (changes random province to your country's religion)
event 700 - The Republic election event (use when Tribal or Monarchist to add sword mana/bird mana/paper mana skill to your country's ruler)
event personality_events.2 - 'Advances in Cartography' (makes you discover a random region of the world map)
event 4900 - 'Native Assimilation in [province name]' - Adds 1000 population to a specified colony (e.g. 'event 4900 631' adds it to a colony in Bali)