I have a 12 kids coming for a garden party please don't rain. I'm doing good boxes for the kids, but was going to just put out a plate of sandwiches for the adults as it's over lunchtime, until my best friend freaked out that people would touch them. What can a I serve? Ideally buy. Would packet sandwiches be naff, it would cost a bit. I don't want to be making to order.