When my daughter was little, we worked through the Girl Scout programs. She was (and is) a Girl Scout, but we were always working on badges. You can make them at a higher level than they are - and they get a badge or patch.

We are working on her Gold Award together now and are studying food production (her choice). This type worked well for us. It is not quite a course and is flexible, but it is also not just my ideas.

So many happy memories of our badges.