I have a little ceramic box on my cutting table that holds a pair of pliers,needle nose pliers, wire cutters, box cutter, little rubber mallet and a couple things I can't remember. They always come in handy. I also put together a metal tool box for the tool box on my truck for little emergencies, course that's back when I could drive a lot myself. but that little tool box has sure came in handy...LOL ..but I don't have any jumper cables in there. :D

Hate to tell you how many toilet tanks my husband cracked because he was sure it needed just "one more turn"!

Lol! I let my hubby unscrew jars for me. I think it makes him feel like a man. But I am not sure if I would let him tighten anything in my studio, I would never get it undone! Lol!

Mine is also really good about opened Nguyen really tight jar lids. He's come to expect it. That's his job.

According to their specs and website, WD40 is a cleaner and lubricant. I have used it to unstick numerous metal parts for many years with great results. But I am sure machine oil works too.