jewel of some sort
thingiverse
if you make the infill 100%, you can probably use it for your every day catapult to catch burglars.
Download Model from thingiverse
With this file you will be able to print jewel of some sort with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on jewel of some sort.