Uses a 60mm Delta pfr0612xhe server fan, small and portable and it packs quite a blast.

76.16 CFM

uses around 30w of power

60mm fan grill project required https://makerworld.com/en/models/487602

Required battery project:

Battery pack 2P3S variant (x6 18650) https://makerworld.com/en/models/487668

Battery pack 1P3S variant (x3 18650) https://makerworld.com/en/models/487623

Material needed:

Various M3 screws

3.2-30v mini voltimeter

3A mini switch 10x15mm

(Optional) xl6009 boost converter to step up the battery voltage to a stable 13v

Related projects:

Powerful 99w mega fan https://makerworld.com/en/models/487975

Portable powerful mini fan https://makerworld.com/en/models/487618

LED spotlight attachment https://makerworld.com/en/models/487592

Car socket attachment https://makerworld.com/en/models/487588

x6 battery holder https://makerworld.com/en/models/487614

battery receptacle snap on https://makerworld.com/en/models/487605

Tools to make the building of the pack easier https://makerworld.com/en/models/487583