Lucas loves his pacifier. I've never had a baby take to a paci the way he has. He would probably suck on that thing all day long if it were always available. But even though it's on a clip, it falls off quite often as he crawls around and plays. Apparently, during one such time, Lucas was really in the mood to suck on a paci and there just wasn't one around. So, he grabbed the next best thing.
That is a plastic octopus toy we got long ago in a Sonic kid's meal. It has a knobby little head that serves just as well as any old paci. Way to think outside of the box, pal.