You can wrap it around arm, leg or glows to use it for turn signal when you bike.
Step 1: YOU NEED
-reflective stripe (I take it from an old jacket);
-piece of fabric;
-piece of velcro;
Step 3: RING
Step 4: VELCRO
Step 5: DONE!
Is fast, easy and I think is really useful, especially if you use bicycles a lot.