Yep, I use them for most of these things too. I will use them for keeping pre-cut binding & borders neatly folded and attached to a tag so I know what project they are for. When I take a quilt down from the design wall I clip each row of blocks together into a "kit" so I can keep them straight when I get them to the machine. I will use them to clip a quilt diagram to the design wall to help me with laying out blocks initially.
All sorts of great uses. I hardly ever use pins anymore.