For this very simple DIY project I used an old cassette tape case and turned it into a business card holder or it can be used as a cell phone cradle. I drilled a hole in the bottom so the adapter to the phone charger can fit through.
Discard the cassette tape you only need the case, then drill a hole in the bottom to feed the adapter through.
This is optional but I wanted the case to be white so I painted it. You can be more creative than me and decorate it with glitter, colorful stickers or however you like.