An easy-to-build DIY room air humidifier concept.
During dry months, when air humidity is low, this improves air quality and subsequently sleep quality.
It's cheap, durable, and easy to make at home from spare parts.
Quality commercial air humidifiers cost between 80$ - 350$. You can build this in 30 minutes for under $10 and it will be more durable.
Made from obsolete components that would otherwise end up in a landfill.
The header image illustrates the concept. It doesn't have to be that ugly. You could build the same concept into a flowerpot, a vase, or any nice-looking box that hides the fan and water.
The concept is pretty straightforward. A spare quiet computer fan could be pulled out of any old electronics. Chances are you have some lying around. If not, it costs less than $2 online. Likewise, any spare adapter would work to power the fan. The higher the voltage, the higher the rotation speed.
If you go for the bare minimum, a 2l PET bottle or any plastic canister can be cut so that the inlet fits the entire fan (whatever your size is). The outlet holes are purposefully made smaller than the inlet, so that slight overpressure and turbulence is created in the canister. As a result, water molecules on the surface are disturbed and evaporated at a higher pace. The process keeps adding humidity to the air in the room.
Computer fans are durable and use little power. You can leave such a humidifier permanently turned on. Only keep adding water when it's near depletion.
How could the concept be improved without increasing the cost?