Bouldering/Climbing!
Love this sport. Everybody, whatever their level, does the same thing : Fail and try to outdo themselves.
It's difficult to go run with someone better than you, or play football because of the skills gap. I found that with climbing whatever your shape you can have the same kind of fun.
I also love the combination of body shape, technique, and thinking (how can I pass this, what does the route want me to do?). And because everybody is trying its hardest, I like that it creates group interaction on trying to solve a problem.