November is birthday month at my house. My daughters were born exactly 3 years apart minus three days. It is always fun to make them something for their birthdays. My oldest has been using a very sad looking small tote bag as a purse. So I thought she might like a new purse. I got the inspiration from this tutorial. The denim is heavy enough that it doesn't need interfacing.
If you're wondering why it is magic. . . I've used a metal tape measure for the top closure. Very simple actually. You make a casing, leaving an opening to put the tape measure in. Stitch the casing vertically where the side seam is. This keeps each piece of the tape measure on its side of the bag. Cut 2 pieces of the tape measure about 1" less than one side of the casing. You can use regular scissors for this. Though I don't recommend using your good sewing shears. Round the ends and cover with a piece of masking tape. Thread each piece into the casing. Sew opening closed and stitch the other side of the casing vertically on the side seam. If you use a dollar store tape measure, double it.
This is a close up of the hardware. I've used split rings to attach the straps and D rings to make the strap adjustable. If you're wondering why split rings. I have a lot of them. They seem to have magically appeared in my studio, as most of my supplies do.