DIY cubby fan from items found on Amazon for about $12. Parts are: Coolerguys 25mm (25x25x20) USB Fan ASIN B07NC4Z24T https://www.amazon.com/dp/B07NC4Z24T/...
USB Splitter Y Cable, BERLAT USB A 2.0 Male to Dual... ASIN B09H22H7VS https://www.amazon.com/dp/B09H22H7VS/...