When it comes to boating true luxury means of course an enormous yacht staffed with enough people to take of everything without bothering you for anything other than 'would you like another drink?' But sometimes it can be a real treat to do something on whim without all those other people around -- just you, the boat, and the water. And maybe a friend. Enter the Mini Inflatable Catamaran -- it fits in a bag and can easily be tossed in the backseat of your car!
This inflatable/unfoldable boat is one you can easily transport and handle yourself. It only weighs 40kg, sets up in about 30 minutes, supports up to 240kg, and can be used on lakes, rivers, or even the sea (although it's tiny so I'd be extra cautious on the open ocean!). $4500.