Yep. Start with a GOOD fan. The more powerful and focussed the better. The thread at UK users looking for a Lasko fan, check this out... Thanks to Hugo1! - #52 by AldridgePrior has some discussion of some of the carpet blowers that people use.
Drinking a slushie (ie. finely chipped ice) can be an excellent way to (keep) cool, as it takes more heat to turn ice to water in addition to just the temperature.
Don’t just stand in the shower, have a cold shower to reduce your core body temperature. Perhaps don’t necessarily start with it cold (that would be miserable), but start warm, and reduce it so just the last minute is cold.