MeatKing - we bring some cheerios, graham crackers, raisins, etc. The kids also like it when I bring little handheld toys like Fisher Price's Little People. Our church has little fabric bags with a coloring book, crayons, and a book in each bag. Just pick it up before service starts and return it afterwards. If your church doesn't have it just bring some. I wouldn't worry about your kids making noise. I take my kids out if they decide it's a good time to throw a fit. I talk with them and they settle down and we go back in. Other than that, I don't think anyone minds. Try not to worry yourself too much. They are little afterall.