The weather here has been ridiculous. Hot and humid. Depending on where you live, you might be dealing with the same things. I live in an apartment building where the electric bill is included in my rent, so I don't worry about the financial implications of running my air conditioner, but I do worry a bit about the environmental implications, so I try to not be too ridiculous with the temperature. I know a lot of people turn off their AC during the day, but my apartment gets HOT in the middle of the day and I have two furry cats to worry about.
All the heat reminds me of my days in college. We were in the midwest, where it got super hot in the fall and spring and super cold in the winter. My dorm was built in the late 1800's, and we definitely didn't have air conditioner. So we went for the next best thing - a giant bowl of ice sitting in front of a fan. It's amazing how great that feels. I still set it up in my apartment from time to time when I really want some cold air blowing on me. Of course, then I have to keep the cats from spilling the bowl of water (they like to drink from it), but it's a great feeling for not a lot of money.
What are your favorite "stay cool" tips?