This isn't extremely fancy, you could do this to teach young girls how to make their own purses, or zipper bags.
Step 1: Materials
Mine has the following measurements :
4 rectangles of 20cm x 15 cm (7.8 inches x 6 inches) and a 6 inch zipper.
2 white, for the inside and 2 black for the outside.
You can do this whatever size you want, if you want it smaller, do so, and it would also fit a phone, it could be a simple wallet, or a tablet case. Whatever you chose to cover or put in it.
Step 2: Adding the Zipper to the Fabric
This is where we're making a sandwich of fabrics and zipper.
I call "right side" the one where there would be a pattern on your fabric, and "wrong side" the one on the back.
Black right side up + zipper right side down + white right side down.
Do the same for the other side of the zipper.
When you turn these 4 sides, you will have 2 black sides on the right side of the zipper, this will be your outside purse, and 2 white sides down, the inside of the purse.
I'm hoping the pictures will be self explanatory.
Step 3: Sew All the Sides Together
Sew along the margins, mine is by hand but i'm sure you'll do a fabulous job on the sewing machine. Leave about 1.5 cm seam border.
I used a lighter to "burn" my edges a bit so that the margins don't come undone. If you use a plastified type material that easily comes undone, either do this if you're in a rush, or use that closed wide stitch thing (i forget what it's called :/ )
Step 4: Turn It Inside Out and Use Proudly
This is the easiest way to make a clutch, purse, wallet if you'd like, or any other kind of cover , holder, depending on the size you make it.
I hope you enjoyed this and tell me what you thing, show me pictures of the ones you made. Don't be shy :D