We are "that family" at church...getaway toddler, crying baby, if I leave with one they all try to escape. One difficulty is our chapel is filled by 10 till so the overflow is usually our option and the gym on folded chairs makes getaways all the easier and noisier. Still, there are plenty of families that manage. I've taught many a lesson at family home evening on being reverent in which the kids can be model students. We've role played, bribed, threatened and still struggle. My latest attempt was this simplified quiet pocket of activities. I think there was a few more minutes of quiet (but not much). We'll keep working on it, I think time is on our side for this struggle.
The pocket activity:
The puzzle used craft sticks, glue and picture. This idea came from pinterest...I wish I could link you but it was one I didn't pin, I saw a picture and figured it out.
The paper pocket:
I got old scrapbook paper and sewed up the sides after I folded it, and then added some stickers a notepad (5 for $1 at the dollar store) and a few colored pencils.
Note: I made them the same to nix squabbles about what someone else my have and tried to make it activities that didn't just turn church into playtime but a quiet time to listen and have little hands occupied.