When the girls were little, about 4, 6, 8 and 10, I did an Origami Workshop for the children's room at our local library.
We prepared by teaching the Children's Room staff how to make the items we had planned. The girls all helped to show them.
When the participants and their families arrived, and started folding, the girls and the staff helped the workshop go smoothly. I stood at the front of the room, demonstrating with BIG paper, and staff and girls assisted anyone having trouble following the directions.
Here is one of the pieces we folded that day, a box that can be made from any reasonably large rectangle of paper:
And here is another. This one is a favorite of mine, and I have made many many mobiles using this design.