Try these simple hacks that use minimal water to help keep cool.
1. Cold compress. Refrigerate damp washcloths or sponges then apply to pulse pulse points like wrists, neck, elbows, groin, ankles and/or behind your knees where blood vessels are close to the surface.
2. Ice Fan. Place a shallow bowl of ice in front of a fan. The breeze will pick up cold water from the ice’s surface as it melts, creating a cooling mist.
3. Wet Blanket. Dampen a sheet with cool water, wring well (or spin in the washer) and use it as a blanket. The evaporation keeps you cool through the night. Recommend using a dry towel under your body and/or waterproof mattress pad to avoid soaking the mattress.
4. Wet Curtain. Hang a damp sheet in front of an open window, or fan. The evaporation caused by the breeze on the sheet should cool the room.