This section goes into adding custom blocks into vanilla Minecraft, that do not require you to sacrifice other vanilla blocks in order to work.
There are several ways to add custom blocks with their own ups and downs.
Credit: Origin Realms blog
Custom blocks can be very easily added to your server using the following paid plugins:
[Spigot] Oraxen
[Spigot] ItemsAdder
There are several ways to do custom blocks: