Sorry - just clarifying a different point. You and two of three kids have celiac and you all live with your husband. His daughter visits on weekends. Husband and step-kid eat gluten at home. Right??
I would have a very difficult time with gluten eaters in my house/car. Mostly because I know how dirty kids can be. Like the toy box/Goldfish scenario. Kids just drop food and others will pick it up. The toy issue wouldn't have even hit my radar when I think about all the rest of it.
In my family of five we have two with celiac and one nursing a celiac. So majority rules that it's gluten free. BUT, even when we thought only the youngest had it my husband and I decided there would be no gluten in the house/car and that I would only cook/serve things that every member of my house could eat. I hear on here (and with friends) about having family-member specific cooking utencils and toasters and all that - lord, that would be a ton of work for me when I'm just trying to get food on table. My motto is to make my life easier!!
So, back to the toys. A good washing should be good. And clean the toy box. Oh, and the car - cheerios seem to multiply under car seats!
Kid 1 (8 y/o girl) - DX celiac via blood in 9/2013 (age 7.5). Negative biopsy in 10/2013.
Kid 2 (4 y/o boy) - DX as "latent celiac" via blood in 9/2013 (age 3.5). Negative biopsy in 10/2013. DX with gastritis.
Kid 3 (2 y/o girl) - DX celiac via blood in 8/2013 (age 1.5) and 9/2013. Still nursing so I'm gluten-free too.