We have found a lovely childminder to do school and preschool pick ups twice a week. She doesn't give an evening meal but says we are welcome to send snacks. Both DDs will be having packed lunches so I'd rather not send a packed dinner as well, but I need them to have something decent to eat after school and preschool as they're always starving by then. I'll be picking them up at 5:20/5:30 and they'll have dinner at home by 6pm latest.
What snacks can I send for them to have after school that are filling enough and I can either prepare the night before or don't require any prep?