When she first goes down, this little girl often spends serious energy getting one hand mostly out of her swaddle. This is so that she can suck on it when she wakes up. She's already pretty good at getting her hand in her mouth. But she much prefers sucking on it when it's covered with fabric. This is why I let her work her hands free, and don't just leave them out.
I call the sound of her sucking on her fabric covered hands my "ticking time bomb," knowing that I need to finish up my involvement in Kiddo's activities and be ready to feed soon.