I promised no sewing: You can use hot glue instead of sewing for this one.
These could be painting according to any theme.
Totally doing this in Presley's Big Girl Room.
For older girls, just giving them the pieces and instructions - like a kit - would be cute, so they could put the rings together themselves.
Use your imagination to create whatever design you'd like.
All photos are property of the perspective websites and are definitely not mine as I am not this talented. :)