There are neb attachments that are pacifiers, look at this site:http://justnebulizers.com/pacifier-inhaler-kit-for-all-mabis-compressor-nebulizers.html/
They are WONDERFUL, I used to work at a daycare. They suck on it, and have to breathe through their nose, which is where the mist is aimed at. Other than that, PARI makes masks that can be used while the baby is laying down or asleep, which might be easiest. Good luck. <img src="i/expressions/face-icon-small-smile.gif" border="0">