Inspired by Leila May (thanks) I have made 2 bags - one for my 13 year old niece and the other for my surrogate grand daughter who is a year younger. I haven't made a bag before so it was all a bit experimental. They're only simple messenger type bags so I didn't use a pattern, I just made it up as I went along. They're 8" x 6" x 2" deep
I had some lovely double sided denim (I think Bodgeit had the same or similar for a top) so they have a deep purple sheen on the main black bit and the reverse on the flaps. The size was dictated by the fat quarters I had for the lining. I've put a pocket inside and an elastic loop to hold a pen - nothing more adventurous. I used invisible magnetic closures but the magnet is a bit weak through the denim. I did somehow manage to get them in the right place so that they close automatically.
Anyway, I'm happy with them for a first attempt and was also impressed that my Pfaff went through 8 layers of denim without any problem.