This is good for Christmas! :D

DIY: The Bangle

What you need: Safety pins of the same size, two sets of stretchable thread

Step 1: Insert the stretchable thread into the head of the first safety pin then rotate the next safety pin so the thread goes into the back instead.
Step 2: Insert the other stretchable thread into the other end, completing and securing a full-length bangle. Tie the ends together tightly.

Source: Female magazine, December 2011