Hallelujah Mountains [maps](https://i.imgur.com/2SkoAyB.png) can be generated by [Amidstest](https://forum.minetest.net/viewtopic.php?t=19869), provided you know the seed of the world. The islands are not homogenous — there will be areas without any, while smaller islands tend to follow eddy fields, often emanating out from much larger and rarer islands.
* Vines, or something that contains vines, such as plantlife_modpack or MineClone2. These will grow off the sides of the islands, climate permitting, allowing you to climb, and looking picturesque!
* [Bridger](https://forum.minetest.net/viewtopic.php?t=18243) or [Bridges](https://forum.minetest.net/viewtopic.php?t=3488) if you want to build nice wooden bridges between islands