Yet Another Backpack Mod

"Oh great, another backpack mod" - you though while rolling your eyes.
Well yes, it is. Nothing to add here. Just a plain old simple mod adding more "balanced" early game storage than most simple backpack mods.

YABM adds a 9 slot Backpack crafted by surrounding a chest with 8 leather pieces.

 
Inspired by INMIS (probably the best vanilla friendly upgradable backpack mod)