A free mod for Valheim, by aedenthorn.
This mod lets you use any single-stack inventory item as a container. It is the perfect solution to the problem of having to remember which items are in your inventory and which are in your bags/purses/luggage etc. The only requirement is that the item you choose to use is single-stack and has a name that matches the type of item you want to use as a container.
This is a very simple and intuitive solution to a very common problem. There is no need for any complex or hard-to-understand programming to achieve this. It is a very simple and easy-to-use mod.
To install this, place the zip file contents in the BepInEx/plugins folder.