Beyond basic survival, certain items improve citizen happiness and are excellent for trade. Ale (Brewery, requires various crops) is a luxury good that boosts happiness. Wool Coats and Steel Tools, while functional, are also high-value trade goods due to their production complexity.
Producing these items requires a stable economy and surplus resources. They are not essential for survival but contribute significantly to a thriving, happy town and a robust trade economy. Use your Trading Posts to export these high-value goods in exchange for rare resources, seeds, or livestock that you cannot produce yourself.