1 x Fan HAT. The best part is that it work for the 4 Model B, 3 Model B, and 3 B +. The cap is a simple cap that cools the Pi and gives it a safe shutdown button. colour: black.
eBay
UPSIREN UF-12 Case fan 12cm 5V 3Pin ARGB and 4Pin PWM High performance mute cooling fan Halo light effect
Aliexpress UK
【Adjustable Wind Speed】: 3 Wind Speed, adjustable, fan protection cover, this cap is unique, simple yet stylish. 【Breathable】: Empty top design, naturally fit the head, not tight, adjustable hat circumference.
eBay
NEW CPU Fan for SUNON EG75070S1-C460-S99 DC5V 2.50W Laptop Cooling Fan
Aliexpress UK
Stay cool and prepared no matter the setting. fan hat x1. Wide Application: Balances UV protection with comfort for beach outings, gardening tasks, and hiking adventures, while keeping you cool in various outdoor scenarios.
eBay
GA72S2U GA82S2H 12V 0.32A 4Pin Cooling FAN For ZOTAC GAMING GeForce GTX 1660 SUPER 1660Ti Twin Replacement Fan ZT-T16620F-10L
Aliexpress UK
SOLAR FAN OUTDOOR HAT: This upgraded fan hat can be worn on the head, freeing your hands. There are 2 mini fans built into the front of the brim to cool your face. You can hang the fan on your head and carry it around with you without getting tired or uncomfortable.
eBay
5H40S19998 Computer Cooling Fan For Lenovo Yoga Slim 7 14ARE05 14IIL05 82A5 82A2 82A4 82A1 CPU GPU Fan Radiator 5H40S20057
Aliexpress UK
【Breathable】: Empty open top design, natural fit the head, not tight, adjustable hat circumference. It’s a practical gift for families and friends. 【Adjustable Wind Speed】: 3 Wind Speed, adjustable, fan protection cover, this cap is unique, simple yet stylish.
eBay
KSB05105HAA01 FAN FOR Acer Aspire S24-880 C22-860 C22-960 C22-963 C24-865 C24-960 C24-963 D17W3 23.BA8D1.001 CPU COOLING FAN
Aliexpress UK
【Cooling】: This solarpowered hat features built in fans on both sides of the brim, allowing you to enjoy outdoor activities like hiking, cycling, or fishing without the need to hold a fan. 【Sun Protection】: Designed with an enlarged brim, this hat effectively cover your face and neck without obstructing your view.
eBay
ID COOLING TF-12015 Chassis Fan 12V 4Pin PWM 500-2200RPM Silent High Air Volume Ultra Thin Thickness 15MM PC Case CPU Cooler Fan
Aliexpress UK
SOLAR FAN OUTDOOR HAT: This upgraded fan hat can be worn on the head, freeing your hands. There are 2 mini fans built into the front of the brim to cool your face. You can hang the fan on your head and carry it around with you without getting tired or uncomfortable.
eBay
ACP8025 80mm Cooling Fan 80x80x25mm DC 5V/12V/24V 2-Pin Axial Flow Fan for Chassis Power Frequency Converter Computer Case
Aliexpress UK
SOLAR FAN OUTDOOR HAT: This upgraded fan hat can be worn on the head, freeing your hands. There are 2 mini fans built into the front of the brim to cool your face. You can hang the fan on your head and carry it around with you without getting tired or uncomfortable.
eBay
YY12025M12B 12cm 120mm blower fan DC12V 0.95A double ball bearing round turbo centrifugal cooling fan for air purifier
Aliexpress UK