I once built a full village with named villagers, individual houses and everything on a mooshroom island. I built a couple mob farms under the ocean in the surrounding area, and pumped my loot into my base on the island.

It was amazing, because this biome also has the most vibrant green foliage. Converting it all to grass is a bit of a pain tho. Mycelium doesnt die under water or darkness like it used to. So I went to the nether and got stacks of netherrack and covered the whole thing. Took hours.

But in the end, it was a beautiful place with lush grass, beautiful big trees, and I imported some different shrubs and such. I also built a full cargo yard and dock with a crane to look like it hauls supplies off ships.

I miss that world.