Title says it all.
(Items):
Oil. 1x1 inventory square. Gained through processing carrots, flax seeds (AKA linseed.), etc, etc. Fuels lanterns and such.
Mortar. 1x1 inventory square. Made from cement, water and sand. Used for constructions.
Hooded Lantern. 2x2 or 2x1 inventory squares. Provides a large amount of light in the form of a cone spewing out in the direction the holder is facing. Must be fueled with oil. Cost: 1 cast iron, 1 plant fiber, 1 glass sheet.
Nails. 1x1 inventory square. Cost: 1 cast iron, produces 50 nails. (Stacks. I assume coins do.)
Stone block. 1x1 inventory square.
Ceramic coins.
Other resources mentioned above. (Sand, cement, glass.)
(Buildings):
Buildings affiliated with sand, cement and glass, if any would be needed. (Mortar mixer, perhaps?)
Lamp Post. 1x1 map square. A tall cast iron stand on which a lantern is typically mounted atop, providing a large amount of light in all directions. Cost: 3 cast iron.
Stone wall. 1x1 map square. Cost: 10 stone blocks, 5 mortar.
Brick wall. 1x1 map square. Cost: 7 bricks, 5 mortar.
Wood wall. 1x1 map square. Cost: 2 boards, 5 nails.
Branch wall. 1x1 map square. Cost: 10 branches.
Stone roof. 1x1 map square. Cost: 5 stone blocks, 3 mortar.
Brick roof. 1x1 map square. Cost: 5 bricks, 3 mortar.
Wood roof. 1x1 map square. Cost: 1 board, 5 nails.
Straw roof. 1x1 map square. Cost: 4 straw.
Wood door. 2x1 map squares. Cost: 2 boards, 10 nails, 1 cast iron.
Wood fence. 1x1 map square. Cost: 5 branches.
Stone fence. 1x1 map square. Cost: 3 stone blocks, 2 mortar.
Wood fence-door. 1x1 map square. Cannot be locked. Cost: 10 branches.
Gate/Portcullis. 5x2 map squares. Cost: 50 stones, 15 mortar, 8 cast iron.
Wall/Roof strength and build time, highest to lowest: Stone, brick, wood, branch/straw.
(Creatures):
Horses. Useful for riding on, carrying stuff and pulling carts faster than humans, when domesticated.
(Other stuff):
Walls, doors and roofs, blocking sight and some light. Replacing buildings, like the log cabin. (Crazy idea.)
Siege engines. Catapults, battering rams, etc, etc. Used for destroying walls, roofs and gates, must be operated by multiple people.
Tiny LP gain for fueling objects. Smelters, tanning tubs, etc, etc. (Seemingly, there is no LP gain affiliated with tanning as things are.)
Current light sources providing more light. (Everyone just turns the brightness up on their monitor as is.)
Ability to put out fires.
Ability to lay bricks, as we do with stone.
Ability to lay wood boards or blocks, as we do with stone.
Shift-clicking dropping stuff if there are not any containers or your equipment screen open.
Glass blowing skill.
Done, for now.
Edit: Forgot something, again, again.