Kobalt bolt cutters

Battery powered Dremel with lots of discs is the cats meow for stuff like that .

my nephew is a company driver but he keeps a cordless drill and grinder and impact wrench and batteries and charger in his rig.
Jumper cables , and a small toolbox .

He also keeps a spare or every light on the rig. keeps a spare beacon strobe for the rear of the trailer , he even keeps a spare CB.
He does oversize flatbed so a CB is essential.

 

The best type of bolt cutters have forged or skeleton style handles, not the round tube handles, the round tube handles will bend/fail quickly. Hauling containers, we cut bolt seals daily, sometimes multiple times per day, the jaws wear out in a few weeks, then the handles bend. Years back, i bought one from Tool Zone, they are forged, Made in England, the handles are skeletonized, rectangular, the jaws adjustable at 4 points and replaceable. Only thing they won't cut through is hardened steel locks, I've tried. I've probably cut 10,000 seals with them, twice a year I hit the joints with a little WD40 and adjust the jaws. Mine look similar to these

 

Cable snips work great for cable seals, the ones I carry are used for cutting garage door cables, but there are similar, usually have to get them at specialty tool stores

 

Carry what works, hauling cans for 20 yrs, I've picked up various little tools and scraps along the way to help me do my job, my boss laughs at all the things I carry in my truck. Scraps of 2x4 that can be double stacked across the frame rails to help lift a low dropped trailer, chain boards (that double as sand shoes) pry bars of different lengths, and cheater bar, and a small tool box of misc tools, in addition to my air hose, air cut-off wheel, and other misc stuff.

Years back had a friend drove for May, he picked up a trailer at a drop yard with a taillight out. Another driver had reported it at a drop yard, when he was sent to pick it up, they told him to take it to the TA truck center and get the light fixed. He used his leatherman, unscrewed it, plugged it in, put it back together, a month later he got a write up for not following company policy and taking it to the shop. He saved the company $50 in labor and 2 hours of downtime.