So I've kind of been on a mission to find fabric that's a bit more "water" proof to use for snack bags. This may be it. I used PUL, which is normally used for diapers. I can't find it around here, so I ordered both a knit and a woven piece.
I made a snack bag and a sandwich wrap with the knit piece, and I'm happy with how both of them turned out. All of the directions I find specify woven PUL, so I'm thinking that may turn out even better. And I'm loving how the sandwich wrap is also kind of a placemat.
I still can't find that PUL is truly food safe, but I've justified it in my head that it's kinder than vinyl. Plus, these are for Sarah, so she can decide.