Seeing that you hang with that set - surely you're in the habit of sponsoring events. Here's an offer.
Golf: pick Aronimink or Merion and sponsor a hole in a tournament, or donate to another GAP charity event.
OR choose the Devon Horse Show, Brandywine or the Devon Fall Classic and sponsor a money class.
OR choose an event at Princeton, the Hampton Classic or at WEF.
I'll set you up with the right parties - or maybe there are folks here that can offer up some alternatives. Most people acclimated to the lifestyle you espouse are very charity-minded. Writing a check for $5, $10, $50 thousand is nothing.
The event organizers would be most appreciative as would the charities that benefit from your generosity & community good will.
Think of the good you could do for say : cancer research, a hospital, a school, a youth organization or an animal shelter.