Carved turnip
A keepsake. Nothing in the game uses it, and it is not trash: selling all your vendor trash leaves it alone. Stacks in one inventory slot. Vendors pay 1 coin for it.
When it turns up
Found during Hallowe'en, 17 to 31 October every year, from any fight won or node worked: about one an hour of either.
Every number on these pages is read from the same rows the game runs on, so it cannot drift out of date. Drop chances are exact.