Here is a world save I was playing for awhile in Hardcore mode when I got bored of building. It includes:
Home base
Farm (chicken, cow, wheat, potato, carrot, pumpkin, watermelon, sugarcane, netherwort)
2 mines (one 15 levels and one 12 levels)
3 mob spawners (to help get xp to repair and enchant items)
beginning of rail system to jungle area with dungeon

The base has 2 horses and 2 mules and everything you could need. Chests are stuffed including enchanted items.