*Requires Campfire by Chesko* - https://www.nexusmods.com/skyrimspecialedition/mods/667/
** This is version 4, the final version created and the most recent one that was available on nexus (PC) and bethesda.net (xbox) in 2017. Due to an unexpected Windows reinstall, I no longer have the older files.
This mod uses the Campfire framework to allow you to create and carry up to 9 different storage containers. They are created at the forge, at the tanning rack, and using the Campfire powers menu. Once created, the containers can be placed on the ground by activating them from your inventory. There will be a blue activator to help you position the container, then the usable container will appear once placed. Add or remove your items, then you can pick them back up and carry them with you. The containers themselves have weight, but not the items in them. Like-named containers can be made and will share their inventory with each other. (ie: chest > chest, barrel > barrel). If you lose or accidentally sell one, just make another and your items will be in it. You can store containers in other containers, and you can place copies in multiple houses or wherever you like. Followers can also carry containers.
Other helpful mods - Favorite Misc Items by PowerOfThree - Allows you to favorite your containers.
Essential Favorites by PowerOfThree - Favorited items can't be sold or deconstructed
Better Container Controls by CDCooley - allows one-button storage between containers, with a config file to help you filter out what should stay in place
The containers and their workstations are as follows. They each require a relatively small amount of materials, such as iron, wood, leather, linen, etc. There is also a bonus, the ability to use collected wood to construct placeable barricades. These can be placed, removed, and carried as well, but they cannot be destroyed by weapon or magic hits. Good for keeping enemies away from your camp site at night.
Campfire Crafting Menu