Make blocks of ice. I find empty milk jugs work great. Once you have a solid jug, place it in a bowl on a dresser or stand. Place a fan directly behind it and turn it on high. The fan will blow over the ice block leading to cooler air flowing into the room. It isn't perfect, but can cool a room a couple degrees! Loose ice will melt faster which is why a block or two works better. Stay cool everyone!