Use the All-weather investment strategy to generate a neat return every year without worrying too much about a market crash. All weather strategy means something like:
80% index funds
12% bonds
8% gold/Cryptos<p>Do that with the $7M and you'll have around $350K every year (after taxes and inflation) for the rest of your life. And best of all, you'll still have $7M (+inflation) to give on to your own children when that day comes.<p>Your gift is my dream!
Altruistic: building a foundation to pardon medical debt, or tackle some low hanging fruit type problems in your neighborhood.<p>Pragmatic: Invest most in index funds, and use the proceeds to fund your startup.<p>Crazy: Alt-coins :D