It's back to school week and my Facebook feed has filled up with photos of my friends' kids in their new uniforms, lunchboxes packed, posing for the traditional first day back at school photo. 

It got me thinking about what kids have in their lunchboxes in comparison to what I remember taking, so I did a bit of research on what Warc had on the subject of snacking – and here are some of the things I learnt from the Warc.com database: