I've been interning at a power company since high school (I'm a junior in college now -- EE/CpE major) and one of the things I did was taking log data for a bunch of events in csv format, filtering the irrelevant data, and formatting it to make it more readable by humans. Since I had to repeat the process a bunch of times, I spent an hour or so writing an Excel macro that let me select a few examples of what was relevant and then proceeded to do all the hard work. I told my supervisor about it and she had me write up documentation for using the macro and then shared it with everyone in the department to save everyone's time.