I spray a thin sheet with water until it is damp and hang it in the window, when the breeze blows the sheet it helps cool the room a little. Also, if you put small bowls of water in the room it will stop the aircon giving you colds as it adds a bit of moisture to the air
We live in cyprus and during the evening it can get very hot, have you got any suggestions how to keep the room cool. We have ac but find this can give the children colds.