Use your tools without asking. Great way to get in some deep shit with an experienced technician with reliable hand tools they’ve been using for years.
I had to chew out a rookie a year or two ago for using my short little phillips head that I’ve had for years. It’s like he didn’t realize that not only is that thing someone else’s property, but it’s used in countless applications that make it better than having to find an equally versatile tool for the job. Little dumb mother fucker.