You will need:
- several duct tape, for colour and variety
- cutting mat and blade and ruler
Step 1: Preparation
The sizes I used are:
A) 8cm x 17cm (base)
B) 8cm x 11cm (top flap)
C) 8cm x 10cm
D) 8cm x 1.5cm
Postcards are lightweight and suitable for this.
A cutting board helps to quickly measure the pieces.
Step 2: Lining the Pieces
The top flap and base should be taped while it's folded, so that later your pencil case will naturally close.
Step 3: Giving the Shape
Step 4: Holding It Together
Also prepare 2 strips of duct tape, width 1.5cm.
Slowly lift the big piece of duct tape, and place your pencil case on the top 11cm of it, placed roughly in the middle (picture 2)
Cut the bottom part as shown (picture 3).
Carefully stick the blue strips as shown (picture 4). Be very careful because when duct tape sticks to duct tape it's really ugly if not impossible to remove. Use blade to trim excess blue strip.
Fold the duct tape and paste (pictures 5 and 6)
Step 5: Creating the Long Strip
Fold in the excess piece tightly. Smooth out creases.
With the top flap bent, continue the pasting. This ensures your pencil case has a natural closure. (picture 5)
Step 6: Final Trim
Finally, attach some velcro for the flap to stick to the case. I ran out of velcro so I haven't got pictures of that step.