The not so new fad are these clever FOB sets. They can be used as an extension of your key chain for easy identification or, if long enough, as an easy way to carry your keys (anything in my hands are immediately placed somewhere and never to be found.)
Some people also use the FOB kit to create the strap part of the wristlet.
The FOB kit is easily assembled. To make a basic fob, choose your choice of 1.25″ cotton webbing. (For more personality, sew a ribbon onto the cotton webbing.)
Fold the webbing in half (if you added ribbon, make sure the ribbon faces outwards.)
Then, sandwich the webbing inside the flat area of the Key Fob Hardware.
Use pliars to close shut. (You may want to protect the metal by covering it with scrap fabric to prevent the pliars from scratching it.)
It takes practice but the end result is your own very key FOB.