My little cheat book says that the black market and smittys have small dread armour but it doesn't give a percentage of how often they have it! Parmanian
{8064}{Small Dread Armour} It is a real item, but it doesn't exist as a possible item for sale (that I could find). For a halfling technologist, you'd likely want Small Feather-Weight Chain, or Small Regenerative Jacket (both of which can be made). Gnomish Chainmail is a bit heavy and more magick-oriented, but easy to find in a store. The various leather armours (Charmed, Magick, Mystic, and Arcane) are hard to get. The first three can appear as random treasure, and the fourth is a rare item sold by gypsies. Small Oiled Thieves Leather is nice for the thieving boost. I don't believe there's any way to get Small Bronze Barbarian Clothes, Small Dark Barbarian Clothes, Small Red Barbarian Clothes, of Small Dragon Skin Leather. I think Small Mithril Chainmail is a rare item sold by magick smiths.
Small Dark Barbarian Clothes is what a short Barbarian wears on game entry. There is a set of Small Mithril Chainmail in the game. I see it & the regular size for sale every few games. It works great on Jormund.