All alchemy ingredients are weightless.

Makes everything in the 'Armor' tab weightless.

Makes all non-armored cloth items such as (magical robes and fine boots) weightless.

Makes all heavy armor weightless. Does not include shields.

Makes all jeweled circlets (such as Copper Moonstone Circlet, Gold Ruby Circlet, etc) weightless.

Makes all rings and necklaces weightless.

Makes all light armor (such as fur bracers and guard armor) weightless.

Makes all shields (both light and heavy) weightless.

Makes all books, letters, notes, and journals weightless.

Makes books that serve no purpose other than reading/selling weightless.

Makes all books related to quests, map-updates, notes, letters, and journals weightless.

Makes all books that grant skill increases weightless.

Makes all skill books weightless, and adds labels to their name illustrating the skill they apply to. Label portion created by elGrecoLoco ('Improved Skill Books').

Makes all spell tomes weightless.

Makes all food and drinks weightless.

Makes all food that can be cooked by the player weightless.

Makes all drinks weightless.

Makes all casual un-cooked food you encounter in the world weightless.

Makes clutter and a number of other 'Misc' items weightless (such as troll skulls and linen wraps)

Makes only Dragon Bones and Dragon Scales weightless.

Makes items that can be smelted into Dwarven Metal Ingots (large decorative strut, etc) weightless. Note that only a portion of dwarven clutter can be smelted, and the items that can't be smelted are NOT made weightless.

Makes Firewood weightless. I couldn't decide what to merge this with so I left it alone.

Makes gemstones (sapphire, flawless diamond, etc) weightless.

Makes Hearthfire Homestead crafting materials (glass, goat horns, quarried stone, etc) weightless.

Makes all leather products (including Netch and Chitin) and animal hides weightless.

Makes metal bars (ingots) weightless. Includes Stalhrim.

Makes all usable variants of Mining Picks and Woodcutting Axes weightless.

Makes unsmelted metal ore weightless. Includes Stalhrim.

Makes soul gems, black soul gems, heart stones, and soul fragments weightless. Does not include Azura's quest rewards.

Makes all potions and poisons weightless.

Makes only potions that give positive effects (health restoration, skill fortification, etc) weightless.

Makes all poisons weightless.

Makes all scrolls weightless.

Makes all weapons weightless.

Makes all battleaxes weightless

Makes all bows weightless. Does not include crossbows.

Makes all crossbows weightless.

Makes all daggers weightless

Makes all greatswords weightless

Makes all maces weightless

Makes all staves weightless.

Makes all one-handed swords weightless.

Makes all war axes weightless

Makes all warhammers weightless.

Makes weightless: Alchemy Ingredients, Skill Books (Labeled), Quest Books, Spell Tomes, All Food, Dragon remains, Firewood, Gemstones, Homestead materials, Leathers, Ore, Ingots, Dwemer smeltables, All Potions, Soul Gems, Jewelry, and Scrolls.