Question: What type of box do you use for the Riddler Device creation?
Option 0: You should search a home improvement supplies store such as Home Depot.  Also you can go to a retail store but look for a box that is small enough so it can't fit on the back.
Option 1: You should search a home improvement supplies store such as Home Depot.  Also you can go to a retail store but look for a box that is big enough to fit on the back.
Answer: 1