This has got to be on every spoilt youngsters birthday list, the Power Paddler Lagoon Water Park for the kid who has everything.
For your thousand dollars you get an inflatable 225 square foot lagoon which holds 1,015 gallons of water, on top of which your child can sail their very own unsinkable paddle boat, though knowing kids (and a famous movie) I don’t think a boat should ever be called unsinkable. If you can afford to have 2 children (which if you’re seriously considering this you must be) then you can buy an extra *unsinkable* boat for a paltry $259.
So for $1,259 you can start developing you children’s competitive streak. Lagoon and boats available from here.