Personal Submarine, Hammacher Schlemmer, $US2 millionIf Santa has some extra cash he can buy this two-person submersible that can reach depths of 1000 feet. The sub's transparent acrylic dome keeps adventurers safe and dry as they channel Jacques Cousteau and Jules Verne.
The sub is powered by battery packs that can supply up to six hours of travel and a maximum speed of 3 knots. It's also equipped with four external 150-watt quart-halogen lamps to light up the underwater landscape, along with a xenon strobe light and RF beacon alerts to let others know your location.
There's a bit of a learning curve when it comes to piloting these vehicles, so training is included.