what about a bulky weight yarn instead (to give it the fluffy look) .. HL has some nice, soft acrylic baby yarns that are super soft to the touch and they are bulky enough to give it a soft, fluffy feel,... a few of HL that come to mind are lambie pie and frosting, ( t hey are the baby bee brand )they are super soft acrylic and have a yarn wt of 5 or6 so they would be knit up in a flash.. check them out and see what you think.
but.. I still
cotton tots~!