This is a very simple duct tape Instructable for making a buckle fastening out of duct tape.
I used mine to make buckles to hold a cardboard art portfolio closed.
The last picture is a diagrammatic overview of all of the pieces of duct tape you will need to make one buckle.
(Materials: duct tape)
Step 1: Fold Strips
1 long and 2 short pieces of tape.
Fold each of those three into thirds so there are no sticky bits showing.
Step 2: Tape Buckle Part
I put mine on the top flap of the portfolio.
Step 3: Tape Strap
This part goes on the lower part of the portfolio.
Step 4: Fasten Buckle
Thread strap up under both straps of the buckle, then fold it over and thread it back over the first strap and under the second.
Step 5: There You Have It!