4-H clubs tend to be a lot more kid driven than many other youth groups, in my experience, plus they are all over the map in terms of what they go do.
I never did the agricultural thing. I was in Adventure Club (think backpacking, canoeing, rock climbing) and Shooting Club. My area also had a Hoof and Woof club that had sort of lost their Woof side of things, but was still strong in the Hoof. Those girls dominated the local Hunt Seat riding scene.
Of all the youth group activities I did, 4H is hands down where I'd put any kids I had, especially considering how the clubs operate and that the kids can work independently of a local group (which means if your interest isn't represented in a local group, you can still get involved and compete/meet/function in a larger region)