This is a Headphone stand inspired by the Dyson Bladeless Fan Air Purifier. It is not an exact replica or scale model, but an adjusted model for printing ease. 

The Model is intended to be fitted with a (OD 42MM, ID 30MM, Thickness 7MM: sourcing map 6806ZZ Deep Groove Ball Bearings 30mm x 42mm x 7mm Double Shielded Chrome Steel P6(ABEC3) 2pcs : Amazon.co.uk: Business, Industry & Science) bearing, and also a smaller (OD 19MM, ID 10MM, Thickness 5MM: sourcing map 6800-2RS Deep Groove Ball Bearings 10mm x 19mm x 5mm Double Sealed Chrome Steel Blue Cover P6(ABEC3) 10pcs : Amazon.co.uk: Business, Industry & Science) bearing- these are not included in the bill of materials as they cannot be found on the Bambu Lab Store- though it can just be used without the base. 

The White Fan part has a notch on one end that lines up as a tag with the Middle Fan part, but to secure the two parts together, some adhesive should be used.