This is designed to securely hold small remote controls (commonly used for controlling multi-color LED lights).

Design specs:

• designed for remotes that are ~40mm wide, and 6.8mm deep with a slight bevel on the back side
• designed for use with standard #6 wood screws (anything larger won't be properly countersunk and will get in the way of the remote)

Printing notes:

• designed to be printed as oriented in the stl file (vertically)
• 30% infill seems to provide plenty of strength when printed with PLA
• Credits to rbmk86 under the Creative Commons - Attribution - Share Alike license