Crafting Additions is a small mod which gives crafting recipes to some items which are uncraftable in vanilla Minecraft. These include:

Armor

Gold, iron, and diamond horse armor can be crafted with 4 of the respective mineral
Chainmail armor can be crafted using chain

Unpacking

The following material blocks can now be unpacked into their respective item:

Nether Quartz
Honeycomb
Amethyst
Glowstone
Snow
Dripstone

Diamond Nugget

This mod adds a new item called the diamond nugget, which can be obtained in the same ways iron and gold nuggets can. Diamond tools and armor can be smelted into 1 diamond nugget. For balancing, a regular furnace must be used. 9 diamond nuggets can be crafted into 1 diamond, and 1 diamond can be crafted into 9 diamond nuggets.

Miscellaneous

Name tag: 1 paper, 1 string

Saddle: 3 leather, 1 iron

Bell: 6 stone, 1 plank, 2 gold

Calcite: 1 andesite, 1 diorite

Tuff: 1 deepslate, 1 andesite

Dripstone block: 1 granite, 1 tuff (Along with its vanilla recipe of 4 pointed dripstone)

Deepslate: 9 stone

Snow block: 2 snow layers