It seems to me that one of the best ways to keep wheat and gluten out of the kitchen is to make lunch myself. That way, no one else decides to make something with bread or toast and leave crumbs all over the damn place!
I have trained some members of my family to only work with bread in one obscure corner of the counter, and the toaster is on another little counter that is used for nothing other than the telephone, answering machine, and piles of maliciousness papers.
This is a help, but when certain people start handling bread, I get nervous.
To tell you the truth, I keep my own supply of jam hidden at the back of the fridge. If someone finds it and places it elsewhere in the fridge, I stop having jam until I feel like opening another jar.
Then there is the crumbs on the table issue. It makes me nervous. They could end up anywhere, and eventually, they could end up inside me, and that would ruin my whole week.
So the time spent making lunch really is an excellent investment, besides a contribution to running the household.