A note: A couple of these might have been mentioned already.
Crop basket- works like bucket does with seeds but instead holds non seed crops en mass. (2x2 in inv, has to be equipped or dropped if it has items in it, just like bucket)
Equip in hand like you would a bucket and carrots/beets (etc) would go into basket instead of inventory. Quality is stored such as acting like a portable stockpile so qualities don't get leveled out. Stock pile a item normally(carrot for example) and it will draw from basket if needed. Or just have a right-click option of take-all that would fill inventory with whatever the basket is holding currently. Have it hold like 200 single tile crops, and maybe 100 two tile crops (lettuce). Disable character from dumping basket into trough else it makes wheelbarrows no longer needed for farming, which I actually do like. (Insert nonsensical reasoning here as to why).
USE: Easier ability to stockpile fodder for feeding/trading/storage.
Sickle- one hand farming tool, that is slower than scythe, but quicker than hand farming.
USE: Using buckets for seeds and baskets (see above) for non seed crops is useful, but to get large fields done in any amount of meaningful time requires the use of a scythe. (looking at my 800 tile beet field) This allows the player to still keep a decent amount of crops without it filling their inventory quickly and just littering ground, while still being quick enough to get through the fields in a timely manner.
Mill-is a building that would grind barley into flour, without needing the player to stand there for hours grinding seeds to make the baked goods we need.
My village goes through a fair amount of baked goods; through trading and eating. A building such as the mill would make the quality of life much better, because there is NOTHING fun about standing at a quern for a hour or more grinding seeds, emptying bucket into barrel, getting seeds from barrel, grinding seeds (etc).
Idea 1:Make it a four by four immovable object that has two fill bars like a tanning tub. One is water that doesn't effect quality and drains very slowly from evaporation, something like for every 100kg flour produced used 1 litter of water. Isn't faster than grinding by hand but instead does it slower but automatically. Holds 10k seeds at a time. And 100 liters of water. Flour poured out like tar kiln, holds 1k kg at a time produces that over like 12 hours. Can be gathered just like tar in bucket or barrel. (Times obviously just a toss up)
Idea 2: Make it a building that requires a bull, or cow to operation just like wagon. Cow eats as much as a pregnant cow while hooked up, and grinds any seeds put into the mill, at a slower rate than hand grinding but again, automatically. Amount held and hours taken to grind again just a toss up like before. This one doesn't require water, so just a seed bar for the building, and a output like the tarkiln.
Ways to balance: Outside of time there would be two ways to balance this so that people still would hand grind instead of auto-grind. Either have it cut quality by some (please not half, that's too heavy, maybe something like.. 10-15 points, still pretty heavy, but becomes more negligible the longer a world goes on, which is good because the longer a world goes on the less most people like doing tasks like hand grinding flour) OR have it produce less than hand-grinding. Making it produce .4kg instead of .5kg means out of every 1k flour produced by hand, this form of grinding only produces 800.
Trough/Barrel Inspecting- This one I have personally suggested once and I'm mentioning it again. Please, allow the inspect feature to display what quality swill is in a trough. And for that matter, give it to barrels to tell the quality of whatever is in it. (such should hold true for chicken coops too, since coop quality doesn't matter, have inspect display swill quality inside of coop)USE: Massive quality of life improvement. Taking a bucket to make sure your fodder is staying on track, is annoying. The more coops or troughs you have, the more time consuming a task that should be pretty easy becomes. Our characters should be able to tell how good the fodder is, since they can tell how good it is when they put it in.
Milking Station- Small building, about as big as a gate, that you can install a female animal into. Just something to lock them in, that will make it easy to milk them, instead of cheesing it by milking through a gate farm or something of the like. You could even go as far as to have the ability to access this small building, and on the menu brought up have it display how often the animal locked into it fills to 10 liters, or how much it produces a hour. Last part is a added bonus, it in itself would be a vast improvement, and isn't out of the realm of historical realism in the least.
Just a couple thoughts, for anything I repeated from other suggestions, I apologize.