I'd go for the lunch or gallery tote. I have a coated canvas lunch tote I use as a diaper bag and it's pretty darn durable and they're so cute. I'd also consider a Vera Bradley tote - my daughter and some of her friends use these instead of backpacks, they hold a lot, have lots of little pockets, and are surprisingly tough and completely washable. Plus my daughter's big tote was only $78 so you could get some cute accessories or a clutch like someone else suggested. Good luck at school whatever you choose.