You have an old USB with broken housing, and you don't use it beacuse it's ugly and it's not safe to use it beacuse you can short its circuit. now here is a way to fix it.
Step 1: HOW TO:
Materials: USB without housing
plastic lighter NOTE: it has to be empty
hot glue gun
First you need to make a hole in the lighter, for that you can use a drill or a soldering iron. But be sure that the lighter is empty and if you are using a soldering iron, be careful for the fume while melting the plastic. Make sure that the hole fits the USB and then glue it with hot glue gun or any other glue for plastic, add a keychain strap.