I made these when I made a Mjolnir for my Thor costume. I wanted to do the classic Thor costume designed by Jack Kirby. I hope you like it! You'll need red duct tape, black wove elastic, a stapler and scissors.
Step 1: The Bracelet
Simply make a strip of red tape large enough to slide onto your wrist. Then, take one of equal length and attach them together, sticky side touching. Then, take a piece of elastic long enough to wrap around your wrist tightly and sew or staple it together. To put it on, pinch and wrap the tape right around your wrist an put on the elastic in the middle. Your done!!