This is a case for eToken dual factor authentication tokens. The design protects the LCD screen and prevents the button from being pushed while it is in your pocket. If you place it on the build plate with the open end down, it will print without supports. Photos shown were printed in PLA on a makerbot 2. The design is public and shared within OnShape. This STL is sized for the eToken Pass, but you can easily adjust the size by branching the document in OnShape then editing sketch 1 and adjusting the dimensions.