Goblins might have a hierarchy based on combat prowess and cunning, with leaders determined through feats of bravery or intrigue. Their traditions could revolve around collecting trophies, celebrating victories, and preserving family secrets.
Goblins might have their own language not understood by most other races. They might also use secret languages or code words to protect themselves from enemies.
Goblins might create artwork from loot and plundered treasures or hold competitions in craftsmanship, storytelling, or combat events.