Thermaltake Mobile Fan AF0007 12CM External USB Cooling Fan for $16.49

Thermaltake Mobile Fan AF0007 12CM External USB Cooling Fan for $16.49.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order to qualify for free shipping.  Here is a screenshot for your reference.  It has adjustable speed and can be used for cooling laptops, desktops, cabinet, and more.  It also comes with an one-touch retractable USB power cable box.  Most places have it for about $24.