The Valheim mods I recommend -
Quick stack: push one button, and stuff in your inventory gets put into nearby chests that already have that in it. Makes unloading after a day of hunting/gathering much nicer
Press a configured key (` by default) to quickly stack items from your inventory into a currently opened or nearby containers.
www.nexusmods.com
Craft and build from containers: just what it says in the tin. Do you have a chest full of tin, copper, bronze, etc next to your forge? Now you don't need to fish out the materials to do your crafting. Plus, if you are doing a lot of building, just load up a chest with wood, and whenever you're near that chest, you'll use the wood from the chest.
Allows you to make use of resources in nearby containers when crafting, building, using smelters and kilns, refueling fires, cooking food, etc.
www.nexusmods.com
First Person View: Lets you zoom all the way into your head, and play in first person view. Surprisingly not jank, I'm very happy with it. I do still recommend mining and farming in third person, and fortunately switching between the modes is easy and seamless. Also, for some reason, comes with the FOV set to 85, but after the first time running it, there will be a config file you can use to tone that down to a less fisheye-like setting, like 70.
First person mode. Enables you to zoom in all the way to enter a first person mode. With other changes to make the experience playable.
www.nexusmods.com
Remember IP Dammit: Makes your game remember the last IP you typed in to connect to, so that you don't have to jump through stupid hoops to reconnect to your favorite server every time.
This mod is not currently available
www.nexusmods.com
Show My Position By Default: Makes it so that "show my position on map to other players" is on by default instead of off, so that you don't have to remember to turn it on every time you play.
This mod is not currently available
www.nexusmods.com
All of these mods require the plugin injector Bepinex for Valheim:
BepInEx pack for Valheim. Preconfigured and includes unstripped Unity DLLs.
valheim.thunderstore.io
It's easy to install, though. You just go into the zip, and install the contents of the "BepInExPack_Valheim" folder into the root folder of your Valheim install. Then go into the bepinex folder, then the plugins folder, and that's where you drop the DLLs for the other mods. Everything then happens automatically the next time you start Valheim. Any mods with configuration files will create those files the first time you run after installing them, so you'll then have to exit out, edit the config files (they live in bepinex/config), and then start the game again.