New teeth.
Half of it will be invested in Btc at a moment that the price is low like it was half a year ago.
When price goes up, selling half the Btc to have investement back and saving the other half.
Then buying a Gigagantic; Function One soundsystem

Some prof.Beamers and a crapload of computers with the fastest GPUs money can buy.
A lightshow , some trucks to transport the system&crew.
Oh and of course lots of drugs&booze.
Did I mention a nicely filled bank account for my sisters little girl?