I use a USB fan and a small mister/spray bottle of water. I spray my forearms periodically (top of hands are fine too I guess) and this creates more of a cooling effect from the fan.
It's also nice to have a wet cooling towel for the neck, I find...I tried one of those dual neck-mount fans as well, and while it wasn't bad, when it broke I didn't feel it was good enough to replace.
There are lots of whole-body tricks as well, from extra hydration (at least 100 oz. daily here in summer) to sitting on a cushion with more air flow...good luck.
It's also nice to have a wet cooling towel for the neck, I find...I tried one of those dual neck-mount fans as well, and while it wasn't bad, when it broke I didn't feel it was good enough to replace.
There are lots of whole-body tricks as well, from extra hydration (at least 100 oz. daily here in summer) to sitting on a cushion with more air flow...good luck.