Money may not be able to buy happiness, but it can sure buy a bunch of cool (yet unnecessary) stuff.
The Water Jet Pack - $10,000
Leonardo DiCaprio has been seen using one. Hopefully it was a more successful water-related venture than Titanic...
youtube.com / Via jetlev.com
James Bond's Submarine Car- $2.5 million
Actually used in The Spy Who Loved Me
Via rmauctions.com
Metal Octopus Table- $100,000
Because why not?
Via octopustable.com
Shark Submarine- $100,000
Be the most badass fish in the ocean.
Via seabreacher.com