Two relatively inexpensive cool tools I never knew I couldn't live without:
A) An 11-in-1 Screwdriver. My brand pick is IRWIN. It's likely your guys already use something like this, but if not, Its a BIG time saver.
B) Self adjusting channel locks! They are so incredibly handy and save you from so much hassle. But keep them oiled! Spray some Pbblaster on them now again and youre good to go.
Side note) Milwaukee's Vice Grips (the one's with the red ovaline adjusting screw, I believe its a two pack) may look like just shinier versions of regular ol' vice grips. But for the money, they are AMAZING. I almost enjoy having to use them. Almost. Haha.