Cyclones are a simple way to separate dust from the air. A fan sucks air through an opening tangent to side of a tube. This applies centripetal force on the dust keeping it spinning against the wall while the air can leave through an opening at the top. Using cones adds airspeed because of the smaller radius at one end.
Static electricity happens when electrons move from one insulator to another leaving both charged and causing attraction. Ions are charged particles which can give electrons to positively charged dust making it not stick to surfaces.
Wireless charges uses electromagnetic fields to transfer energy between two objects using induction coils. One in the charging base station, and a second induction coil in the portable device that takes power from the electromagnetic field and converts it back into electrical current to charge the battery.
The human body has innate movements for certain tasks. It is the way we move when we don’t have tools to use. These movements should not be fought but rather imitated in our products to make them feel as natural as if they were part of our bodies.