These are phone stands that can be fixed to the back of mobile phones to allow you to stand them and watch them comfortably without having to hang onto them. These stands also open up and you can insert a finger into the device to hold it more securely.
Attention: Stores and retail outlets I have beautiful cardboard tabletop displays to sell these phone stands on. I offer them free with the purchase of 50 phone stands that will fit on each display.