Placeable Buckets for Catching Rainwater
Noodlemire

Allows empty buckets to be placed as nodes in order to collect rainwater.

Hopper
FaceDeer

Adds hoppers to transport items between chests/furnace etc.

Bridges and stairs, factory-style
narrnika

Adds a steel bridges, railings and stairs in Minetest.

Nodecore Luxgate
Avicennia_g

A simple attempt at adding craftable portals called "Luxgates" to nodecore.