Air Conditioner/Coolers best substitute

It is too hot here. Nearly touching 40°C. And I cant afford to buy an AC or a Cooler right now. So, what would be the best substitute which I can afford or can make by my own?

Most people won't have the materials to do this, but you can mimic a swamp cooler. You need flowing cold water for best effect, but static water or ice is better than nothing. If you have some sort of fountain you will place a fan right in front of that blowing on you. If too much water is getting on the fan you can put an air filter in front of the fountain and behind the fan, the type you should have in a furnace or ac unit. They are cheap, like $1 each, if you don't have one and need one.

You could make your own swap cooler by making a recycling water fountain to soak one of those filters. Another filter about 2 inches away from that one that isn't getting soaked, and then a fan directly touching the dry filter blowing away from the water. You'll have to look up making a fountain though as I don't have any real experience with making one.

The idea is for the water to cool off the air being sucked into the fan and subsequently blown into you.

The colder the water and the more water that flows over the filter the better it will work.

Edit: also if you can find a filter that is more porous, or has larger holes, you will get more air flow and thus cooler air.

Edit: this video here is almost exactly what I described, or at least pictured in my head. The second air filter I mentioned was just to keep the fan from being saturated from splashes and thus dying.