My DD will be starting high school and needs a new bag (and pencil case!).
I remember (a decade or three ago) I was desperate to have whatever was popular. I may just start her off with a cheap bag and let her develop likes and dislikes. But is there anything that is trendy at the moment so I can steer her that way (to save waste).
When I was in Year 7 record bags (square, over the shoulder ones) became very popular and then I think I just wanted an Adidas rucksack and a drawstring PE bag from JD Sports.
Oh and I'm not especially into fashion and I won't be pushing her into trends or brands - I just remember being forced to buy "practical" items as a child and I hated them so much and stopped using them as soon as I could. I don't want to waste money on that for DD. Also, it's fun :)