I'd get some nice yoghurts and things in, sandwich stuff, maybe cheese and things that don't go out of date too quickly, you could always also have some baked potatoes in as they could just bung them in the microwave themselves if the labours long. Or freeze a pack of bacon and muffins and they can stick them under the grill or microwave. But maybe that's a bit far? I don't know.
Maybe have some apples and bananas and bits in as some people like to eat healthily, but biscuits, cereal bars, crisps, haribo etc must be nice as I guess it's long for them, too.
Tea, coffee, water and juice would be good.
Soup, bread, jam, butter- soup and toast are easy and quick to make. They might want mints, too.
I want a homebirth next time so I think this is a great thread!
These are just ideas and I've probably gone a little bit far, but you get the jist.