OmkuyDirect via Amazon offers its Omkuy Mobile Game Controller Grip with Fan and 2,000mAh Charger for $19.59. Coupon code "A92NXXY3" drops that to $12.73. With free shipping for Prime members, that's $7 off and the lowest price we could find. Features include:
  • 2,000mAh power bank
  • cooling fan
  • triggers
  • compatible with 4.5" to 7" Android and iOS phones