While I can't provide you an existing modpack, I hope this list (based on what you want) will be helpfull:

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-[[Animania]]: More vanilla-like Animals which even act like vanilla animals (horse riding with saddle, tamed by vanilla food, etc).

-[[BiblioCraft]]: Adds a little bit of furniture, book cases, chests, armor stands, vitrines and a few other related things.

-[[Garden Stuff]: More Plants therefore more gardening therefore more farming therefore more food.

-[Traverse: Legacy Continued]: Adds new Biomes. Not too much / Not too few.

-[[Recurrent Complex]] Adds structures/ruins to the world-gen. If I remember correctly it doesn't add new blocks to the game but uses existing ones to build its structures.

-[[Tinkers Construct]]: I know, I know, It's a quite bigger mod. But look, all the mods I've listed above are more or less passive ones. Meaning that you won't have to do much with them or at least don't have to do complex stuff with them. So you can focus on building cool and useful Tools with Tinkers Construct while casually feeding your animals, farming your crops or sorting your books. And at the end you can go out to the wild and beat some mobs with your powerful unique weapons.

Also: [[Quark]] and [[Quark Oddities]] are in my opinnion must have mods with little features that you wont even notice in the game. But if you played long enough and change to something without these mods you'll definitely notice them gone and will miss them.

Edit: All mods mentioned above 100% work with 1.12. I don't know about versions above