Option 1 - Purchase as much Destructive power as possible and try and rid the earth of most of it's problems (Thats the nicest way I could put that one)
Option 2 (Realistic) - Pretty easily pleased and happy with my lot in life, allways could do with the extra cash though, would make it a lot more bearable.
Be a few 7 figure anonymous donations going around - Childrens hospital and Saving the Tigers would be a couple and other charities close to home (Stuff that has affected people I have known)
90 Million is just too much, no mansion or cruisers - Could rent nice enough accomadation for wherever I chose to go and Really never been turned on by huge mansions (just to impersonable for me).
A Nice fishing boat you could sleep on would be nice but nothing that required any staff.
Oh yeah and out of 90 Mill - reckon I could chuck a couple the Tigers (Richmonds) way. Maybe a coule of brown paper bag deals to Natanui's and alike could be done ala Pratt/Judd.
House on peninsula overlooking the ocean (not bay) for sure
Man this could go forever - u get the drift ......
Back to reality