Got an idea a while ago for timelines which diverge by huge amounts from our timeline based on seemingly tiny, irrelevant changes. These changes are usually boosted by the butterflies erasing people from existence. Do you have any timelines like this and if so what do they involve?
For mine a random Londoner pukes slightly to the left after drinking too much. The affects the path of a passing traveler which in turn radiates out in a domino like effect. This eventually reaches King Henry VII of England prior to him fathering any sons which erases King Henry VIII from existence. The effect? Britain is a staunchly Catholic nation, the Spanish are the dominant power in the world and are the majority in the Americas, Australia and New Zealand. The English have very little population outside Britain and its language is not very widespread.