Instructables
Picture of The Elegant Duct Tape Phone Clutch
With the right materials and some careful work, you can create a minimalist, custom case for your every-day-carry essentials.  This case has a hook-and-loop closure, a loop for a carabiner, or wrist strap, and a front pocket for a couple of cards.
 
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Step 1: You will need:

Picture of You will need:
Materials:
  • Duct tape
  • Transparent tape (packing tape, or even "Scotch" tape will do)
  • Cardboard
  • Adhesive hook-and-loop tape
  • Credit cards (or cardboard cut like credit cards)
  • Flexible plastic sheets (in this project, I used a really tough shopping bag)
  • Carabiner, or split key king

Tools:
  • Ruler
  • Scissors (for cutting cardboard and plastic)
  • Utility knife (for cutting duct tape, and packing tape)
  • A big, clean working surface that you can stick, re-stick and unstick tape to (Hint: no hardwood dining tables)

Step 2: Create a fake phone

Put together your fake phone.  I measured and cut some cardboard to be a little bigger than my phone, so that my phone can slip in and out of the case easily.

You're going to be winding tape very tightly around the cardboard, which is quite punishing.  Another good reason to leave your real phone out of the process.

Step 3: Cut out parts of phone case from plastic sheet

Cut out these plastic pieces:
  • Main body: should be wide enough to wrap around your fake phone, with overlap, and long enough to fold over the bottom
  • Card pocket: long enough to fold over a couple of credit cards, and one inch wider
  • Biner strap: twice the height of your phone case
  • Outside flap: again, twice the height of your phone case, minus a couple of inches
I built my case for an HTC phone, and a couple of cards.  Your measurements may vary. 
twighahn1 year ago
how about using the packing tape as a window so you dont have to take your phone out
The velcro is a nice touch. Thanks for the share!