There may be times where it is important to have a child wear a t-shirt or sticker warning other people not to give the child food because of celiac/GS or allergies. The choice of these items has increased over the past few years. Here are some sites where you can find this stuff.

There are even shirts for dogs. I need to buy my dog one but DH would never let me put it on her. At the lake she gets fed by well meaning people.

I have no financial interest in any of these companies.

Cafe Press has many GF (not food) items available. Here are a few I found:
The Gluten Free Goddess: http://www.cafepress.com/karmuchogusto
Silly Yak - if you subscribe to St Johns list there is usually a discount coupon each month : http://www.cafepress.com/sillyyakWOW
Gluten Challenge: http://www.cafepress.com/glutenchallenge

There are many more shops for GF apparel at Cafe Press and you will find all of them here:
http://www.cafepress.com/buy/gluten

Gluten Free T-shirts - also has some good links: http://gftshirts.com/

Anne