Not sure how long it goes on for, but a ton of PBK backpacks, lunchboxes etc are currently on sale and also free shipping (they offered code GOFORIT, but I wasn't charged shipping to begin with?) I got my to be kindergartner a small backpack & lunch box for under $30!

ETA: I saw a lot of people debating between small/large. Going for the large meant they could use it for years to come. But I have a petite girl and I think the large would have just been way too big; since I got this on sale I'm okay with upgrading to large in a few years!