I would like a Sim-Farm animal pack. It doesn't have to be to turn the animals into meat, just have like cows, goats, chickens, sheep, that sort of thing. Produce milk, cheese, eggs, wool, etc. :) A small scale "farm". So you could have a cow to make milk, a way to pasteurize and homogenize it then sell it. Also cheese, goat cheese would be cool. Eggs with a few chickens maybe. Though I think having chickens would be more of an "object" like a baby for game purposes. Wool from a sheep. That sort of thing.
For build objects, (could do all this by hand from any sim, so a new skill) I could see a milking machine , a pasteurizer, homogenizer, a cheese maker, oh yeah, and butter. Also a way to process the wool turning it into yarn and hand make clothing and rugs, and for the big costly machines, auto produce stuff to be used or sold for furniture, curtains, etc.
Would make an interesting pack. Probably a game pack.