All you need is your phone charger & washi tape. Get some fun washi tape, below is an example of some different kinds.
It also depends on how wide your tape is. Obviously, it would be idea for it to be as wide as your phone charger. Mine wasn't, I just had to match up patterns & place another piece of washi tape on. Cut any excess you might have & you are done. It only took me about 10 minutes to make these. I almost want to go out & buy another charger so I can make other ones!!!