Supplementaries Utility: Signs, Maps, and Item Tools
Supplementaries includes a set of information and utility blocks that make bases easier to manage. This guide covers the standouts and the mod's world structures.
Writing and maps
Antique Ink turns a book into an antique book and is also used on maps to make a Weathered Map with an aged look.- Item Lore — combine a
Name Tag to add custom lore text to an item; 
Soap clears it again.
Item customization
Soap is a recurring reset tool across the mod — it clears item lore, washes tipped bamboo spikes back to plain, and cleans several other items. The sus crafting recipes turn 
Sand and 
Gravel (and their brick forms) into their Suspicious variants for archaeology-style builds.
World structures
Exploration turns up two Supplementaries structures: the Road Sign, a fairly common signpost that generates about once per 19x19 chunk region, and the Galleon, a larger ship spaced around one per 31x31 chunk region. Both fit the mod's goal of enriching the vanilla world without changing its feel.
Blocks are three-quarters of the mod
With 198 blocks against 64 items across 262 pages, Supplementaries is overwhelmingly about things you place. The 262 crafting recipes on 1.21.1 (263 on 1.20.1) are nearly one per block, so most utility blocks are a single craft with no intermediate parts.
Stonecutting for the building set
15 stonecutting recipes — identical on both versions — cover the block variants, which is the fastest way to turn one material into a full set of shapes.
Version-specific behaviours
Several block-adjacent systems exist only on 1.21.1 and are worth knowing before you plan around them: Add Charges (3 recipes), Soap Clearing, 
Trapped Present, Confetti Dye, Item Lore (2), Antique Book (2) and Weathered Map (2). All of these are zero on 1.20.1.
Cutting also doubled from 3 recipes to 6 between builds.
The two world structures
A Galleon at spacing 31, separation 19, and Road Signs generated with strongholds at spacing 19, separation 10. The road signs are the more interesting of the two for a builder, since they tie the mod's blocks into existing world generation.
Tipped Bamboo Spikes
Bamboo Spikes