i had seen a different air cooler but it took too long to print so i designed this one.
you will need 1 x 120mm usb fan available on ebay (link below)

https://www.ebay.co.uk/itm/133745339405?hash=item1f23d7ec0d:g:b-8AAOSwg5lgin2u&amdata=enc%3AAQAHAAAA4B6NzepftMNUD%2F%2BQzCCqnH4WiwsYzntvEztPg9rpztLIo2TKGwzDKVEBg1wq5Tb6R40dZNMUjJ6Fr04oZpQ6vrNgJMHHPRt4lVaDu%2FjqmM8EnHL1QSa7UfURC1VltwBwsl%2BRAAodc3bCk0qjxbMElIdGKxAFyzfGrr74BLGbuc5ptzHQd%2BrZzRx9%2BPKzvXdjiqQMEwcd0UVUOocLqZl479cNTzylDjpeEHSNVj87Oexs%2FzLBcCfZb8552Eajv3gXJayj1u9KZ08ae3jx2bd%2Bw8Luuy3WvRZnQQJbO7glmdMk%7Ctkp%3ABFBM_uj6ncVg

Geeetech A20M

Doesn't Matter

No

0.2

5

when the base is printed you will need to drill the 4 holes to fix the fan to the base or add them in a design program