In the past few years, we have covered plenty of unique levitating gadgets here. The Myconos is also worth a look. It is a biofireplace made of natural marble. It has two levitation mode. In classic levitation, it will spin endlessly with no flame. In the second mode, the stone levitates with flames.
A micro-nozzle is used to hit the upper stone with bioethanol. As the stone rotates, the fuel burns evenly over it. Myconos has a stainless container for fuel and a magnetic charging connector. You can find out more about it here.