Plinko
thingiverse
A small(or big if you want it like that) plinko like thing for your desk. Make sure to scale the ball and main thing the same for it to work. There is also a .mix file if you want to make any changes in Meshmixer.
Download Model from thingiverse
With this file you will be able to print Plinko 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 Plinko.