This model was designed in Fusion 360. Want to learn how to design your own models? Check out my Fusion 360 Quick Start Course available at https://www.desktopmakes.com/ Print all three parts and assemble.  You only need an led and cr2032 coin cell battery besides prints.  See assembly video below Visit my website at https://www.desktopmakes.com/ for Fusion 360 Designing for 3d Printing courses. and design video here