I started out using a simple rectangle then used the Direct Selection Tool to round corners. Deleted the fill and gave shape a bold outline. Placed another rectangle on top of outlined shape and then used Pathfinder to trim piece I wanted to keep. I again started experimenting with rounding various corners. I had the U shape and was messing around duplicating/rotating it and thought to myself that internal shape looks a bit like a little Chick.... Once developed it came to me that I could probably use U shape to develop lettering for a logo.