Wow-#1 would be nice. I had a lot of aviation in my past with my father having an Air Force career. His equipment was mostly Recip as he retired in '68. When we cleaned out the house I found a bunch of his old flight manuals.
Traveling in Europe would be nice but fighting the crowds would be a pain. Maybe some day. Another thing is playing a musical instrument. Probably strings or keyboard.

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT