Every week I buy a bunch of bananas, a bag of apples (or occasionally, pears), bread, cheese, yoghurt and some cereal bars.
Often I buy crumpets or bagels.
I buy a lot of ice lollies or ice cream in hot weather.
We always have peanut butter, marmite and and jam in the cupboard, and often honey and chocolate spread too.
dc1 likes granola or muesli as a snack, sometimes cheese, nuts or pumpkin seeds, occasionally a mug of hot chocolate.
dc2 will usually choose a flavoured yoghurt or bread and jam, or an ice lolly if available.
If you choose to have a sweet snack between meals, you can then have fruit or cheese and biscuits for pudding after dinner, but not another sweet thing.