This one was quite fun to make . I used a really small pair of jeans though (i think a kids size 14) so It wouldn't quite work as a school bag. Just an extremely big purse with and extremely thick strap, that I'm in love with haha.
I forgot to take a picture of the inside (doh!) But the lining is the same fabric I used for the strap. I used buttons, tulle and rickrack to decorate ^_^
errrm.. craftster isn't letting me upload any photos at the moment. So I'll update later when it feels like being nice to me.