Throwie
thingiverse
It is a cylinder and a cap that was built on Blender and printed out on a Thing-O-Matic. It contains an LED which I soldered to a reed switch and connected to a coin cell battery, so that when you put a magnet near the reed switch the LED it lights up.
Download Model from thingiverse
With this file you will be able to print Throwie 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 Throwie.