Amphibious bicycle that is able to be ridden on land as well as water. Maximum weight on water was 120kg. (France, 1932)
A hat that is also a radio. (USA, 1931)
A piano for bedridden people. (England, 1935)
An early contraption that could be compared to a modern day hair dryer.
A mask that was supposed to help Hollywood actresses fight against hangovers. It is made up of ice cubes stuck in different spots that cool the face. It was coined by Max Factor. (USA, 1947)