Buy a selection of cars, then beef them up some (such as sticking a hyper car engine in a landrover defender, a super-charger on an aston martin vanquish e.t.c).
Buy a house, a boat, an aquarium, stuff to go in the aquarium, an island, a submarine, a plane, lots of plants and a pair of slippers and glasses for every room of my mansion (and a butler to put them back) so i never have to search again