I found the perfect project for your old jeans.
With this tutorial bywandee easy sewing, you will learn how to sew denim tote bags.
Its easy to make just follow the instructions below.
Image by wandee easy sewing via Youtube
Cut in the sides just until the crotch area, then cut across.
Next, cut on one side seam.
Step 3:
Get the denim square.
Sew the small strip on top, and the large strip on the bottom.
Sew them on the sides of the patchwork, then topstitch.
Repeat with the other piece of old jeans to make a total of 2.
Repeat with the other piece.
Next, spray glue on the 2 pieces of batting (E) and attach them to each piece.
These will be for the front and back of the bag.
Step 6:
Iron each fusible interfacing (B) to fabric (A).
Fold it in half lengthwise, open then fold each side towards the center.
Next, fold it in half again.
Secure with pins and sew on each side.
These will be the handles.
Step 7:
Fold the front in half to get the midpoint.
From the middle, measure 5 to each side, then mark 1 down from those points.
Sew the handles to the points, then topstitch.
Do the same for the back part.
Step 8:
Place the front and back right sides together.
Step 9:
Get the 2 pieces of fabric F, then place them right sides together.
Sew all the way around but leave a 4 opening on one long side.
Flip it right side out, then sew the opening.
Once done, draw straight lines across each point.
Step 10:
Get one lining C. From the top middle, measure 3 1/2 and mark.
Draw a straight line across.
Get the middle of the rectangular piece from step 9 and align the top to the line.
Sew the sides and bottom, except the top.
Next, sew on the lines.
Step 11:
Place the lining on top of each other right sides together.
Sew on the edges but double-check to leave an 8 gap.
Cut a 4 square on two corners then cut.
Next, cut a 4 square on the bottom corners of the bag.
Step 12:
Sew box corners on the bag and lining.
Step 13:
Sew the lining to the bag.
Topstitch on the edge.
Lastly, sew the magnetic button.