I run craft workshops for adults and children. I run crafty parties and have attended events specifically aimed at children (e.g. BedPop Science Lab where I ran Bath Bomb Workshops).
My workshops give children the confidence to be creative, and I teach skills that are easily replicated at home. I always use materials that are easily found at home.
I teach children to re-use or re-purpose things that might otherwise end up in a landfill, e.g. old books into flowers, old clothes into hand-sewn items. This hopefully sparks an interest in looking for alternative ways to use things.