Most of it: Real Estate.
Form a charitable foundation, precious metals.
What's left would be invested in private business, stocks, held in banked and unbanked cash reserves,
and an ever rotating amount of bitcoin.
Re: Real Estate...
What do you think will happen to real estate when the baby boomers all start retiring...(which has already started)?
Many will be going to old folks homes or downsizing to condos.
That's a large amount of people taking their money out of an industry.
It will be a large amount of people moving their money around an industry.
There are tons of variables within any local market. So while real Estate is "A" market, I
wouldn't apply trends blindly across "the market".
An example would be: Boomer homes in well established neighborhoods being sold in Silicon Valley will be gutted, rearranged and so on.
There are drawbacks and opportunity in every market.
P.S. give us another 10 years (maybe less) to forget this past real estate disaster and another 10ish to be in full bubble mode again ;-)
Also, I will most likely be investing in more income producing properties.