WoodPick it up to discover it.
ObsidianPick it up to discover it.
FeathersPick it up to discover it.
Freeze GlandPick it up to discover it.
WorkbenchDiscover and use at level 4 or higher.
Discovery is separate from having enough materials to craft. Check shelter, fire, placement, and station access in-game. This checklist cannot diagnose broken mods or save files. Each alternative recipe is listed separately.