Custom Crafting is a plugin that allows us to create any crafting recipe we want. You can find some of the recipes we have added through this plugin here.
Gravel and Sand can be crafter into each other, this was done because at one point sand was a struggle to get reliably when the world border was small
Raw Iron Blocks, Raw Gold Blocks, and Raw Copper Blocks can be smelted in a furnace for 35 seconds or in a blast furnace for 17 seconds to create their non raw block form, it is faster than smelting the non block forms of raw ore