Here's a picture of Tanner carrying his equipment bag to a game:
Most of the rest of us pick up something at Target, Wal Mart, or the like. For me, I like the rolling carry-on size suitcase. It's a pain to roll it over a gravel parking lot, but it's great on sidewalks and hallways. I've seen others use the over-the-shoulder gym bags. I guess it's just a matter of preference, and how much stuff you need to bring with you.