At one time I would have put on a concert. I would have Elton John, Eric Clapton, Phil Collins, Billy Joel, Sting, Tina Turner and ZZ Top. I would ask for 4 or 5 songs from each artist. And any duets, etc they might want to do. It would be in the smallest venue I could find in the U.S. or Italy. With a JBL sound system. I would fly in friends from around the U.S. and Italy. Probably a total of about 40 people.
Instead of paying the artists I would make large donations to their favorite charities. I hope that would be a better inducement than plain cash. And of course I would have to pay for an organizer.
This idea was back in 2008. Tina is gone. 1/3 of ZZ is gone. Elton has quit. Phil has a disability. Suppose I could still go with Billy, Sting, Eric and the newish ZZ.
Heck. If I had a billion I would open 4000 FDIC insured savings accounts getting 4% interest.