What are some hobbies that are accessible to both rich and poor and allow for socializing across economic divides?

Fishing!

Sports

Hanging out on outdoor couches!

Painting

Sailing

Enemas

idk dude, maybe just like...play video games or something lol but seriously, that shit can get pretty expensive too so I guess it's not really accessible to everyone. But hey, at least you can meet players from all different backgrounds and bond over your shared love for virtual ass-kicking.

Geocaching

Popular sport like football, and possibly videogames?