Jewelry Box

My wife wanted a small box she could put several necklaces in. I adapted an OpenSCAD file from Thingiverse that could make a customized box with hinges, by removing the hinges and clasp, then adding magnets to hold the lid closed. I thought, if the box had a sign on it that said “Nothing in here”, if some thief who was robbing us picked it up, he'd put it back down once he read the sign. (Duh, possibly not). I can't find my hacked version of the original .scad file where I commented out the hinges and clasp. I exported the resulting .stl file from OpenSCAD and imported it into SketchUp where I added the magnet closure. The magnets I used are 6x3mm. The file on Thingiverse where the OpenSCAD file for this box came from is https://www.thingiverse.com/thing:6834596/files