Ok so my LO loves a wubbanub but I'm thinking about ordering another for back up when the other is in the wash or just to have in the diaper bag so I'm not frantically searching the house trying to find it before we leave. I've heard babies can get attached to a certain one so I'm wondering should I buy the same thing I already have or is it ok to get something different? How many do your LO's have, are they attached to a certain animal? TIA