Have you heard of Mabel's Labels? They are a Canadian company of moms who really understand the need for good labels.
My favorite is the package of safety labels. They are dishwasher and microwave safe as well as UV resistant. Sissy takes a water bottle to school, church, shopping - everywhere. I have a safety label on her water bottle. The plate and lid combo in which I take Sissy's meals with us is decorated with one on the top and one on the bottom. I cannot recommend them highly enough!
I love them. They are bright red with a cute icon, your kiddos name and allergy. Hop on over to Mabel's Labels to check out their products! I am not getting paid to endorse Mabel's Labels; I just REALLY love them!