Pin Wheel

The blades track the real wind speed where they are placed, so this is a live readout you can leave on a wall. One glance tells you whether a kite will get off the ground and whether the windy conditions are still running, without opening anything.

That makes it more useful than most novelty furniture. Put one outside the door of your main base and you stop guessing at the weather. The catch is availability: the Merchant only lists it while the wind event is going, so buy several the first time you see the line rather than a single one.