https://www.forbes.com/advisor/banking/ways-to-insure-excess-deposits/

Here are some of the most common strategies if you're over 250k. But at 100M it would be very foolish to not invest (likely hiring a private wealth manager to do so competently).

Pesto noodles with chicken Apple sausage and grape tomatoes. All available at Costco! Can modify to remove sausage for vegetarians or add arugula if desired

I prefer shoveling snow (and snowblowing). Takes about half the time of my yard and is only about 10-12 times all winter in my area. My yard is usually every 4-6 days.