Made 2g headstrap to hold a keychain LED light.
3/4" wide 0.34oz cuben, about 23" long
1/16" shock cord
Tiny cord lock
Ultra-mate Velcro, adhesive backed
1/4" wide double sided tape
Apply the tape to one edge of the cuben, fold over. Apply another length of tape to the cuben, fold over again. End result is three layes of cuben all taped together, about 23" long, 1/4" wide. [if 1/4" wide tape isn't available, use 1/2" and start with 1.5" wide cuben strip. End result will be 1/2" wide]
Apply 1" long of tape to the end, and fold over 2" of the end to form a loop at the end of the strip of cuben 1" long. Fix tape down.
Cut and tie the shock cord, attach cord lock.
Test fit on head. Locate where you would want the light to be on the side of your head (this can be adjusted by rotating on your head)
Cut small piece of hook side velcro, affix to strap. Loop side goes on your keychain light.
Place strap on head, stick light on in desired direction.