Portable 20L Evaporative Air Conditioner 3-IN-1 Cooler w/ Remote Cooling Fan

You can add water at the top. This portable Evaporative cooler fans is built with 4 strong and durable 360°rolling wheels (2 Locking, 2 Non-locking). Even if you are not using it as a cooler, it's a windy machine!

eBay