I made this bag for my mom for Christmas. She loves Moda fabrics, so I bought one of their charm packs (called Arcadia). I had to make up the pattern for this - and used the same techniques for boxed corners and the lining that I used in the trick-or-treat bag in October.
The handles were lined with interfacings, as was the patchwork fabric to give it extra strength. Each square was 5"x5", so the bag was roughly 15"x12" in size.
I loved how it turned out. I was trying to work on a tutorial for this bag when I made it in September, but things got crazy and I didn't finish it. So if you are interested in a tutorial, leave a comment so I can see if there's interest out there, and then I'll finish the write-up for the tutorial.