Star
thingiverse
This is just a standard star, but with a flat side added so you can attach a pin or a magnet easily. You might have to resize it to suit your requirements. Have fun!
Download Model from thingiverse
With this file you will be able to print Star 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 Star.