Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6201176.

I had a few spare motors and a switch so I decided to make a fan.

The engines used are these: https://www.amazon.it/gp/product/B07HBMQ4GF/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

(They are horrible and have no torque, sooner or later I'll add a reducer to make the fan bigger)

For the rest you need some M3 10mm screws for the lids, some wire, 2 AA batteries, something conductive to connect the batteries (I used washers and 1 M3 8mm screw, but feel free to experiment)

The hole for the switch is 6mm in diameter and the groove to insert it is 8mm X 16mm.

The fan was generated using the hyperair script: https://github.com/hyperair/fan-blades

If you want to modify it, the size of the motor pin is 2mm.