Let's try some environment friendly diy - try to make DIY fan

Usage: Place the system near windows or terrace, it can decrease the temperature nearby


Example 1: High speed solar fan


Material: Solar panel, 2 wires, high speed solar motor and fan leave
Example 2: Horizontal solar fan


Material: Solar panel, 2 wires, high speed solar motor and fan leave(use pizza stand and stick with light metal piece or metal plastic piece from snack)
Example 3: High effect solar fan


Material: Polysilicon Solar panel, with lower speed (higher turning power) solar motor, old pc fan leave and adding softdrink can extent leaf

It can any combination, try it yourself, from what you have!