This mod will replace all the vanilla textures for you, including the ones for items, the world, the player, and more. There is a filter mode for the item textures which makes them look pixelated up close.

There is a hotkey for the reload textures (default is Page Down), so you don't have to remember which button to use. The mod also includes a scene dump where you can get the raw text file and edit it yourself if you want to.

This mod is very useful for those who want to make their own texture packs and for those who just want to edit the existing ones. It's a very good idea to create a new pack to avoid breaking your game. The textures for this mod are in the valheim_Data/sharedassets files.