3. Four Foot Metal Bladed DIY Windmill
This DIY garden windmill is four feet high when it is finished, but you can easily scale the plans to meet your own height preferences. You make this from sheet metal, which is relatively inexpensive. When it is finished, it works just like a real windmill by pivoting in the direction of the wind. This one is pretty simple – you just need to know how to cut sheet metal to make it.