These super cute key fob wristlets are great for not only carrying your keys, but can be a really fun way to give a gift card. You could even punch a hole in your work ID card (don't wreck it though!) and carry it around like that instead!
This features a key ring, and good sturdy hardware. It measures 1" by 7 inches and can easily be clipped to the side of a purse with an additional carabiner add on.