These are some backpacks I worked on for the Once in a Blue Moon update for Fallout 76. I designed the brahmin backpack to have physics on the limbs like we did for bottle and cappy in NWOT, so when your player runs around with this backpack on the limbs flop everywhere.
Ogua Shell concept art: https://www.artstation.com/artwork/NyeYmb
Ogua Shell backpack concept art by Fergus Russell https://www.artstation.com/crowbit