Massive "free iron" area which dispensed large amounts of iron from iron generators



High-speed object dispenser for drop parties



Rainbow beacons (players click buttons to change the colors)



Massive squid farm, with hovering water columns, suspended above a humongous set of concentric rings of pumpkin, melon and sugar cane farms. All the food can be harvested by walking over pressure plates.



Slime farms



~800-portal gold farm, with AFK points strategically placed to maximize pigmen production



Large egg farm



Giant mushroom farm, driven by high-speed growers made with redstone



Massively parallel potion brewery



High speed two-level smooth stone generator



Trading village, with villagers sorted by profession for easy trading (unfortunately despawned before I saved the world).



Sheep-powered piano (spawn sheep in the water tubes, and then float up and down which randomly triggers note blocks)



Herbalism mcmmo grinder



Fishing mcmmo grinder



Treefeller mcmmo grinder (high-speed tree grower)



Grumpy cat pixel art. Players can press buttons which make tears emerge from the cat's eyes.



My island, known as "/warp toys", was very popular on Woodycraft's Skyblock server. Besides some appealing design elements, it had these features:I had a lot of fun on Woodycraft's skyblock server and it's a shame they had to shut down.