) gallon jug can be crafted with the following recipes

Autolearned
Player Recipe
Primary skill used: fabrication(1)
Required skills: N/A
Time to complete: 30 minutes
Tools required:
> 1 tool with cutting quality of 1
Components required:
> 10x duct tape
> 8x plastic bottle OR 16x small plastic bottle
Byproducts:
(none)

Autolearned
Player Recipe
Primary skill used: fabrication(4)
Required skills: N/A
Time to complete: 45 minutes
Tools required:
> 1 tool with cutting quality of 1
> hotplate (15 charges) OR multi cooker (15 charges) OR charcoal smoker (15 charges) OR integrated welder (15 charges) OR atompot OR nearby fire OR chemistry set (15 charges) OR charcoal cooker (15 charges) OR hexamine stove (15 charges) OR gasoline cooker (15 charges) OR mess kit (15 charges) OR military mess kit (15 charges) OR lamp oil cooker (15 charges) OR soda can stove kit (15 charges) OR survivor mess kit (15 charges) OR CRIT mess kit (15 charges) OR heat cube (15 charges) OR heat cube (torch on) (15 charges) OR basecamp stove (15 charges) OR basecamp fireplace (15 charges) OR basecamp stove (15 charges) OR smoking rack (15 charges) OR basecamp charcoal smoker (15 charges)
> makeshift vacuum mold (4 charges) OR vacuum molder (2 charges)
> hotplate (5 charges) OR multi cooker (5 charges) OR charcoal smoker (5 charges) OR integrated welder (5 charges) OR atompot OR nearby fire OR chemistry set (5 charges) OR charcoal cooker (5 charges) OR hexamine stove (5 charges) OR gasoline cooker (5 charges) OR mess kit (5 charges) OR military mess kit (5 charges) OR lamp oil cooker (5 charges) OR soda can stove kit (5 charges) OR survivor mess kit (5 charges) OR CRIT mess kit (5 charges) OR heat cube (5 charges) OR heat cube (torch on) (5 charges) OR basecamp stove (5 charges) OR basecamp fireplace (5 charges) OR basecamp stove (5 charges) OR smoking rack (5 charges) OR basecamp charcoal smoker (5 charges)
Components required:
> 15x plastic chunk
> 1x polycarbonate sheet
Byproducts:
(none)
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This recipe can be found in the following books when fabrication is at least the required level:
Plastics & Polymers: Projects for the Classroom (level 2)