For sale is a list of above Dangan Ronpa characters' acrylic keychains.
The items come in the small silvery packages shown and were opened to determine the characters inside as well as to photograph if applicable. 
Buy 3, get one free! If you'd prefer, the free one can be anything else I'm selling for $30 or less instead. Message me/send a note to request the free one when you buy three!
Super Dangan Ronpa 2 Keychains: Here