1. Perennial irrigation: Although fishing has long been the more prestigious profession among the Terrock, farming was just as vital, if not more, to the subsistence of most Terrock settlements. The ebb and flow of the Terrine river, however, was unpredictable, and not often suited for maximal agricultural production. Terrock farmers have noticed that the water flows in predictable patterns based on the height, width, and other characteristics of the ground beneath it, and thus have begun to dig small streams and canals about the river, focusing the river's flow to nourish as much cropland as possible, without flooding it.

2. Goat domestication: Although fishing has always been the primary meat-gathering method practiced by the Terrock, the hunting of land animals is still prevalent. The goat is among those animals most often hunted by the occasional Terrock hunter. As the Terrock have long had domesticated dogs, it is only natural that some Terrock would attempt to domesticate other useful local fauna, to enable ease and reliability of access to those animals' useful products. The goat, already know among the Terrock for its ability to provide meat for sustenance, as well as skins, hair, sinew, and bones for the construction of tools, clothing, and buildings, was the first of these non-canine fauna to be widely domesticated among the Terrock.

3. Hoe: Terrock farmers have traditionally used the mattock as their primary agricultural tool, although, this implement was hardly of standardized form. Terrock in certain areas, where the mattock is unsuited to local conditions, have begun altering their tools to function more effectively in their native environment, over time creating a new agricultural implement distinct from the venerable mattock. The hoe has now spread throughout the many Terrock communities, and has now become another mainstay of Terrock farming.

4. Oars and 5. Rowlocks: Terrock woodworkers have cooked up a new naval propulsion upgrade, by attaching paddles sturdily to the hull of a ship, instead of simply being held by the paddler. The force from the paddle is now more directly exerted onto the ship, and the skill required to row the paddles properly is significantly reduced.

6. Celestial navigation: The wisest and most learned of Terrock sages have long studied the sun, moons, stars, and other celestial bodies, noting the locations of and patterns between them. As Terrock sailors build bigger and sturdier boats, and travel further and further from familiar waters, they have come to seek the sages' wisdom in ensuring a safe return journey. Among the various blessings to Ensolum and auguaries from fish intestines, these sages also imparted this knowledge of stellar organization, from which experienced sailors managed to construct a practical navigation technique.

7. Salt curing: The Terrock people, long being people of the sea, have noticed that seawater and river-water and qualitatively different. Terrock sages have traced this difference to a translucent, white crystalline substance that is left behind when small pockets of seawater are exposed to intense sunlight for extended lengths of time. Knowing that fish stay healthier for much longer in the ocean than they do after being butchered, Terrock sages have deduced that, logically, butchered fish covered in these ocean-crystals should too last much longer before spoiling. As Terrock sailors continue to travel on longer and longer voyages, this ability to preserve their fish has proven invaluable when fishing for new fish is either impractical or impossible.

1. Linen sails: The Terrock, being a civilized people, have long worn clothing made from flaxen textiles, also known as linen. Again, as a mark of their civilizedness, the Terrock wash their linen clothing to prevent the accumulation of unsightly grime and stains, which then leaves the clothes all wet. When these washed clothes are hung outside to dry, the Terrock have observed them fluttering and blowing in the wind. Some of the cleverer among the Terrock wondered if a vast blanket of linen could be tied to a pole constructed into a ship, and used to harness the power of the unusually strong winds that blow across the Southern ocean to move that ship faster then simple human paddlers can. The first of these experiments simply ended with tiny scraps of cloth fluttering harmlessly in the air, or massive proto-sails that caused their hapless vessels to violently capsize, but over time, reasonably reliable and harm-free sails have been forged and affixed to the larger vessels constructed by the Terrock.

2. Stone anchors: Terrock fishermen have noticed that it can be difficult to fish properly if your boat keeps drifting away from the fish. Terrock rock-throwers have noticed that big rocks don't drift with the waves. In a stunning interdisciplinary breakthrough, Terrock plant-shapers have fastened linen and papyrus ropes connecting large rocks to fishing boats, allowing those boats to be anchored in place.

5. Recurve bows: A Terrock fletcher, while crafting a set of self bows for her village, noticed that a subset of her current batch of bow limbs was malformed, lacking the straight curve found in properly constructed bow limbs. Normally, such misshapen failures would be thrown out, but this village had recently been raided by a neighbouring village to the North, and needed to outfit warriors for a counter-raid in short order. Thus, these recurved bows were distributed to certain unlucky villagers through the time-honoured tradition of drawing coloured rocks from a basket. However, in the ensuring counter-raid, these recurved bows performed much better than expected, even surpassing the most excellently crafted specimens of straightly curved bows. This innovation in archery spread throughout the Terrock villages through the process of raids amongst themselves, to the point that almost all Terrock bows are now crafted with recurved limbs.

6. Linen gambesons: Terrock warriors have noted the effectiveness of wooden shields in increasing survivability. Shields, however, only defend against attacks that are actively defended against, and preclude the use of two-handed weapons. Wanting to replicate the defensive attributes of these shields in their clothing, Terrock warriors and woodworkers quickly found that wooden armour is silly. Instead, Terrock warriors began wearing multiple layers of regular linen clothing, which was not nearly as effective as their shields were. The warriors then turned to the cloth-shapers to produce a purpose built defensive garment, which resulted in a quilted jacket, stuffed with cloth scraps, dog hair, and other miscellaneous materials. While still not quite as protective as their trusted wooden shields, Terrock warriors nonetheless found these new garments effective enough to make them standard issue on any raiding party.~~