Well I've seen C-130 hauling a lot of stuff. In fact I've loaded my fair share of them too. Once loaded a snow cat on one. Though rolling stock is neat, palletized cargo was the norm. 463L pallets piled high with plastic covers and netting over that strapped down to the pallet. I've asked several aftermarket mfrs to provide resin pallets and PE nets, but none have taken up the challenge.
You could do a firefighting C-130 the apparatus is unique and fills up the cargo compartment.
You could do a couple of pallets of cargo, one low profile baggage pallet (which usually sat on the ramp) with the front of the compartment filled with Ratan funiture, stereo & TV equipment boxes, cases of beer liquior & wine and just about anything one would buy on an overseas shopping trip. This was the norm for AF Reserve and ANG C-130 aircraft.
We had a C-130 show up from the Wyoming ANG at our base to haul a Hawaii ANG Prime Beef unit back to Hawaii after their deployment for Team Spirit. The aircraft was full of the aircrews personal crap. The aircrew's junk took up three full pallet positions on the aircraft. It literally rendered the aircraft useless for the mission they were scheduled and tasked to haul.
I'll tell you tempers were hot that day. The aircrew was uncooperative, the unit returning home was pissed off and I was mad as a hornet too. The aircrew had only flown in from Japan and wanted "crew rest" so they could go shopping in Korea before they headed back towards home. When I reported that the aircraft was unsuitable for the tasking due to it being filled with personal property PACAF, MAC and the AF were screaming at the ANG folks, especially the Wyoming unit commander.
I had to ship two or three of the pallets via normal airlift channels, which meant separating the team from their tools and supplies. Fortunately I wasn't above sending them using a higher priority than they really were, so they got there PDQ. We packed the unit inside the C-130 as best we could, seating was tight because of the personal crap inside and the pallets of their deployment bags for the unit being transported. The commander of the Prime Beef team called me when his other pallets arrived at Hickam...he said they made that aircrews trip pure hell. The aircrew didn't even set foot off the base in Hawaii, they left as soon as they could to fly back to Wyoming. I heard the crew was reprimanded.
After that incident there were fewer ANG C-130s tasks to support the units we were redeploying back to their home units from our locale after Team Spirit. Must have been something I said. We got C-141s instead!