Ambient One
ambientworks.io
Most air quality monitors look exactly how you would expect, like they were designed by a 90s cubicle worker. Ambient One does not. It is an air quality monitor that looks like an object you would actually want on your windowsill. Its portable nature means you can move it around and test the air wherever you are. In my opinion there are not enough well designed objects that help us understand and navigate the natural world, I would guess (and hope) this area of product design will explode in the next few years.