Reassuring Cup Holder——against bumps by 阮敏婷 from china

During a flight, bumps caused by airflows often make water in paper cups splash out, which smears clothes and aircraft seats, and causes people to panic.
Design of the reassuring cup holders uses principle of rotation of two points. By connecting each other through four rotary fulcrums, the paper cups can keep balance when the plane bumps. People can put their paper cups into the holders securely during the entire flight.