The MyPie Catapult is a great introduction to hands-on making with 3D printed parts. It’s easy to assemble and is fully adaptable, making it a great platform for mechanical design!
This project is designed to be approachable by new makers. All of the print files are simple, and do not require any support or high-resolution printer settings. The parts are fully adaptable, and can be re-purposed to build a number of projects with 1/4 inch wooden dowels.
More informations, STLs and assembly instructions are available here: https://cults3d.com/en/jewelry/mypie-catapult-shoot-pies-to-the-skies