Create my own drug empire - gets you a lot of money but needs a lot to start. Hahah messing! Buy about 10 - 20 houses each at around 100 - 200K, Rent them get more money, Buy computers and random modern shit I would never have thought about buying, Quit my job (If i had one) and travel every place in the world.
When I die pass the houses on easy money for my children/grandchildren (If i had any) to start their own buisness/live a happy life

Man, is it weird we have very similar ideas on what we would do if we have 10 mil? Perhaps i'll see you when we both have 10 mil buying a new house down the road.