We had one of these for Natalie too. It came in real handy during teething. I could pop an ice cube in there and let her chew on it and numb her gums.
The Nuby Nibbler has a squeeze and twist locking system so the kiddos can't open it. It also comes with a cap to keep it clean when traveling. It's easy to take a part and clean as well.
You can buy this little nibbler at buybabydirect.com, diapers.com, amazon.com, cookieskids.com and babyearth.com
Follow along with Nuby and all their great products on: