Snow White and the Seven Orphans.
Everyone knows the story of Snow White and the seven dwarfs, though it's generally assumed in the story that the dwarves are adults. Not the case here!
The Steps:
1. Create Snow White. YA with whatever traits you'd like ("Hates the outdoors" is recommended, but not required)
2. Create the seven "dwarves". All Child sims of whichever trait combinations you'd like. You can also name these kids whatever you'd like.
3. Place the family in the lot of your choosing, and build a separate "house" for Snow White, where she can never leave. The children can live in the main house, but they are expressly forbidden from interacting with Snow White in any way.
Snow White must provide all the funds for the raising of the children, but as she cannot leave her little hut, she cannot get a normal career. The Children are to fend for themselves, they must attend school regularly, get themselves fed and clean, and figure out how to avoid being taken away by the social worker. If Everything goes well, seven children will age up into seven teenagers, and then seven young adults. And if you neglect the kids, Social services takes them away before you can say "Saturday Morning Cartoons"!