this may sound gross, but my lo LOVES (and i mean LOVES) using a used burp cloth (cloth diaper) as his "lovey." he will hang on to it, put it on his face, rub his face/mouth on it, chew on it, etc. i've started sleeping with one for a couple of nights, then use it to nurse all day one day, then give it to him to sleep with that night. we were concerned about his breathing, so we just placed his head on it when we put him in his crib, but soon he was pulling it out from under him so now we just let him hang on to it. the nice thing is that i have so many and it's easy enough to get my scent on it so i don't have to worry about losing one or having to search ebay for another one!