With warmer weather coming along, I thought I'd remind people of a method that works well and doesn't cost much.
If you have a fan that can be used on a table or on the floor, you just need a plastic water bottle, maybe more than one, of about 1 litre capacity.
Freeze the bottle of water and when you need to cool down, put one in front of the fan so the air blows towards you and is cooled by the frozen bottle. Make sure you put the bottle in something that will catch the condensation or you'll end up with a pool of water underneath.
It works and it's cheap.