My choice, is a few planes, and probably another motorcycle. I'd probably buy a plane that could handle a more varied load than a business jet and still get you there at a reasonable speed, and then something for fun. A mild aerobatic plane as opposed to the serious competition ones. If I had some cash left I'd go for a T-34 or T-28. If it was 10 million I might try and find a WWII Corsair, but that would probably burn through the 10 million in a few years. That's just me, I'm not a boat person, but I get some love boating.
My fav is a motorsailer. This one will set you back 2 million with most options ... https://nordhavn.com/models/n56ms/
A lot smaller yacht at 50', the Bruckman motorsailer is a bargain at 500k. Here's a 10 year old used example for sale. https://www.yachtworld.com/boats/2008/bruckmann-50-mkii-3240591/?refSource=standard listing
For 5m these 2 jets are within budget. https://www.avbuyer.com/articles/jets-comparison/cessna-citation-m2-vs-embraer-phenom-100-100e-98538 .