Venomous Fangs by Cleverpanda
Cave spiders drop venomous fangs which can be crafted into poison arrows
Vertical Slabs & Horizontal Stairs by _gjkf_
Adds vertical slabs and horizontal stairs to vanilla Minecrqft
Vertically Stacked Dimensions by CD4017BE
Effectively increases the Build height by stacking dimensions above each other with transition portals in between.