In Cat Story, there are several buildings or items that create resources for you.
Resource Buildings
Farmers Market - Available at level 1, a Farmer's Market allows you to sell your production items like fish and chowder for gold.

Strawberry Patch - Available on level 1, turns gold coins into food.

Cow - Available on level 4, turns gold coins into food.

Vineyard - Available at level 10, turns gold coins into food.

Ostrich Farm - Available at level 16, turns goild coins into food.

Production Buildings
In Cat Story, production buildings turn food into another resource such as wheat or wool.
Fishing Grounds - Available at level 1, turns food into fish.

Fisherman's House - Available at level 1, turns food into fish.

Wheat Field - Available at level 4, turns food into wheat.

Wheat Farm - Available at level 5, turns food into wheat.

Sheep - Available at level 11, turns food into wool.

Sheep Pasture - Available at level 11, turns food into wool.

Hawk Farm - Available at level 17, turns food into feathers.

Peacock House - Available at level 17, turns food into feathers.

Sugarcane Farm - Available at level 22, turns food into sugarcane.

Bamboo Grove - Available at level 22, turns food into bamboo.

Kettle - Available at level 1, turns fish into chowder.

Kitchen - Available at level 6, turns wheat into

Smokehouse - Available at level 8, turns fish into

Rope Machine - Available at level 12, turns wool into rope.

Mill - Available at level 14, turns wheat into flour.

Shelter of the Rains - Available at level 18, turns feathers into

Spinning Wheel - Available at level 20, turns wool into cloth.
