Good way of getting soil bags?

[Seal Sovereign]

I wanna make more items but can't find that many, and waiting for my character to poop them self takes quite some time.

[MechWarden]

You should progress further.

Looting around in the Manufacturing area should trigger an idea for something that will make that easier.

[burger boy]

there's often some in the kitchen on level 2 ( the floor with the flooded electro-hazard room and elevator to the level 3 silo ).