Dutch architect Janjaap Ruijssenaars spent 6 years developing magnetic floating bed.

The bed is held up 40 cm above the surface by a permanent magnetic force due to the use of neodymium (NdFeB) elements in the floot and in the bed itself. Four thin cables assure it's position and the smart use of steel plates and air make the bed userfriendly by decreasing magnetic force where it's not needed. Floating bed can hold up to 900 kg of weight and can have different uses such as sofa or dinner table.

The shown model at pictures is at 1:5 scale and it can be bought for around $150,000. The actual bed is about $1,500,000. It's not cheap but that's the price you have to pay to be able to sleep in mid air.