Why Strongholds Matter
Strongholds are the only way to the End. Finding one means: challenge the Ender Dragon, get Elytra, explore End Cities. Normally requires lots of Eyes of Ender and travel.
Near-Spawn Stronghold Seeds
#1 mimi: complete portal (12 eyes installed!) at X:-580 Y:35 Z:110 — jump straight into End. #2 -172235491: stronghold under village at X:-800 Z:160. #3 52525: dig straight down from spawn.
Warning: Silverfish spawn in strongholds! Breaking stone bricks may release them. Listen for rustling sounds.