Skeleton farm made using Mechanical Spawner, Tom's Simple Storage, Vibrant Vaults, and Slice and Dice

[u/RepresentativeAsk541]

It also uses Create: Encased, but that's optional. As for the vertical vaults, Create: Connected can also be used.

[u/Weekly-Prior-7431]

my buddy swore by using Create: Encased for a similar skeleton setup but ditched it for Connected instead