Maglev fan
thingiverse
I was inspired to make my own version of this instrument, using the pile of magnets I have lying around (yes expect to see more prints with magnets): https://www.youtube.com/watch?v=Fgq1c_5zNFo It's printing now and I haven't thought about adding the fan yet, just wanted to get something floating and spinning first.
Download Model from thingiverse
With this file you will be able to print Maglev fan 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 Maglev fan.