Our research
My colleagues and I have been researching what South Australian families put in lunchboxes and why.
In our 2025 study of 673 preschool and primary school lunchboxes, we found 53% of all packaged items in lunchboxes were single-use plastics, mostly from snacks. The most common packaged snack types were chips and muesli bars.
We found families tend to let children’s preferences drive what they pack – because if food comes home untouched, kids can go hungry or food may end up in the bin.
Parents also told us they tend to rely on packaged foods because they are busy and have little time to prepare school lunches. It’s not that they don’t care about sustainability, but choosing familiar packaged items they know their children will definitely eat take priority.
