DvC Neck Fan
These run off 2 AA batteries which are included with the price of the fan.
These are considered "necklace fans" because they hang around the neck, and the air port blows straight up at your face from that position. So you get air to your face without having to hold it in front of you. It's also good for suiters who can't or don't want to install a fan in their suit head, because they can just put the fan into the mouth of their fursuit for that on-the-go air, and then let it hang around their neck when not in use.