I would ask what the recipe is and bring some or all of the hops. Or maybe the yeast.
If he has everything already, then definitely a carboy or bucket to take your 5gallons home.
Primary 1: Guardrail Pale Ale
Primary 2: Lake Vacation Wit
Primary 3: Air
Secondary:All my secondaries are currently primaries
Keg 1: Old Yeast
Keg 2: Old Yeast
Bottled & Drinking: Commercial Stuff
On Deck: Nada