I am in my sophmore year of highschool. (10th grade)
Its very easy for me, and I am usually done with all of my work very early, so I do a lot of doodling, thinking, planning, humming, sleeping, and finger conditioning (I have one of thoes grip masters from musicansfriend I keep in my pocket)
I draw a lot of guitars in my marketing class, but Im a horrible drawer, so they all look like a third grader with a crayon dipped into his dads stash of weed, and went to town on a peice of paper.
I draw lots of schematics for pickups, but they all seem kinnda wrong somehow.
I also draw checkers on EVERYTHING, every one of my shoes has checkered toe caps now.