This is a good, quick home made iPhone (or any other phone) case. What's more is that you can customise it with your own drawings.
Step 1: Materials
You will need:
The phone you intend to make the case for (or a template the size of the phone).
Duct tape or sellotape
A small blade(optional).
Step 2: Drawing and Cutting
Draw around the phone onto a piece of cardboard and cut it out. Make sure you leave big gaps at the edges for the sides of the case.
Cut little squares out of the corners of the case so that you can fold up the sides.
Step 3: Folding the Sides
Cut a hole for the camera and then fold the sides of the case. Tape the corners together.
Step 4: Nearly Done
You can now fit your phone in and try it out.
There is just a bit more.
Step 5: The Front
Trace the phone and cut it out again. Tape one side of the piece you cut out to the case.
Step 6: Customising
Cover the case in masking tape. You're done! You can now draw on your case.