This is an area where we have struggled somewhat. Our attempts at girl scouts were a disaster (my last straw -- a "career day" that featured a trip to the mall to talk to about working at a retail outlet. It turned into a shopping trip for the leader's daughter while the other kids watched). We also looked into 4H at the local county extension but the kids weren't interested.
We have fallen back to doing things as they come up at home. We recently shifted our approach and have had some success. We posted a list of suggested tasks. Every weekend each kid has to pick one task that they want to learn (or once they know it, just do it). We try not to have them do the same task more than two weeks in a row so they don't just do one thing. If they come up with something not on the list, we discuss whether or not something if sufficient to meet their work requirement. (e.g. fixing the split seem on a throw pillow or weeding the tomatoes). It's not perfect but it has worked a lot better than our previous benevolent dictatorship.
DH also has got them working on making their own toy structures. DD10 wanted to make a big wooden house. DH had her design it and draw it up on drafting paper. Her project included a lot of applied math. He had her do most of the tool work except for the table saw. (I just couldn't handle that one). DD8 made a creative latching system that let her open the roof of her horse barn for better access. DS5 got to use the drill press many joyous times to make a tinker toyish castle for his knights.
I still haven't figure out how to get them to learn things that they don't want to learn but at least they are learning some practical basic stuff.
