EOFY sale across a lot of products at Montii.Co, including their well-regarded lunch bag range.
Most lunch bags are 25% off, but the large "Jetset" bag is even better at 44% off ($25).
Other good deals include drink bottles up to 60% off, backpacks up to 60% off, lunchboxes up to 61% off and coffee cups up to 58% off.
Personally, I find the insulated lunch bags are great for younger kids at kindy / school.
All deals can be found here - https://montii.co/collections/the-best-bits