Passing time with the iPhone

I had to go into Walmart and return two items. I throught that there shouldn't be too long of a line during the middle of the day on a Monday. Well, I got to the customer service and saw there were 10 people in front of me. I thought ugh. However, I took out the iPhone and checked my eamil and browsed a couple of web sites. In no time, it was my turn. I don't know how much time it took, and it doesn't matter. I was otherwise occupied. It was so easy to kill time with an iPhone app. I am sure that holiday stress would go down if everyone had a way to occupy themselves in otherwise trying situations.