"Flat surface items" refers to two similar groups of placed furniture items.
Items on which other items can be placed[]
"Flat surface items" sometimes refer to these items, which have flat surfaces that can support the placement of other items, and will work to create a Placed Bottle crafting station:
Items qualifying for a House flat-surface requirement[]
These items fulfill the Flat Surface Item requirement for Houses, even though some of them do not actually have flat surfaces where other items can be placed:
